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KIA OPTIMA ENGINE MARKETPLACE
Kia Optima Engine ReplacementCompare Prices & Save
Get quotes today from trusted UK Kia Optima engine specialists. Compare prices on reconditioned, rebuilt and used engines, with supply & fit available.
Kia Optima Diesel Engines - from £495 to £1,450
-> Rebuilt units from £495 · Common codes: D4FD, D4HA
Kia Optima Petrol Engines - from £550 to £1,600
-> Rebuilt units from £550 · Common codes: G4NA, G4FD
Kia Optima GT-Line & Performance Engines - from £750 to £1,850
-> Rebuilt units from £750 · Common codes: G4KE
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3 Simple Stepsto Finding the Best Kia Optima Replacement Engine
Get Instant Quotes from KIA Engine Specialists Across the UK - 100% free, no obligation. Most replacements completed within 3-5 days.
Most replacements completed within 3-5 days.
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Live UK Engine Market Data
What Are UK Drivers Paying for Kia Optima Engine Replacement?
Typical UK rebuilt Kia Optima engine costs by variant, code, fuel and size - compare failure causes and prices.
Average Market Prices
- Kia Optima (JF) 2.0 CRDi2016-2020£650-£1,450Timing chain stretchD4HADiesel 2.0L
- Kia Optima (JF) 2.0 GDI2016-2020£750-£1,600Oil consumptionG4NAPetrol 2.0L
- Kia Optima (JF) 2.4 GDI2016-2020£800-£1,850Piston ring wearG4KEPetrol 2.4L
- Kia Optima (TF) 1.7 CRDi2011-2015£495-£1,200DPF cloggingD4FDDiesel 1.7L
- Kia Optima (TF) 2.0 CRDi2011-2015£550-£1,350Turbo actuator failD4HADiesel 2.0L
- Kia Optima (TF) 2.0 GDI2011-2015£600-£1,400Carbon buildupG4NAPetrol 2.0L
- Kia Optima (JF) 1.7 CRDi2016-2020£550-£1,300EGR valve failureD4FDDiesel 1.7L
Last updated: 31 May, 08:53
Customer Reviews
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“Got three quotes within an hour and chose the best deal easily. The whole process was quick, clear and stress-free.”
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“I wasn't sure what I needed, but they helped me identify the right engine and connected me with a trusted garage.”
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Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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Models We Cover
Kia Optima Engine ReplacementAll Variants Covered
From the economical 2 1.7 CRDi to the high‑performance GT‑Line 2.4 GDI, compare rebuilt, reconditioned and used engine prices across the full Kia Optima range with our network of UK Kia Optima engine specialists. Typical rebuilt unit prices range from £495-£1,850 with 12‑month warranty - supply & fit available nationwide.
Core Diesel Range
Specs136hp
Years2011-2020
Rebuilt£495-£1,200
Core Petrol Range
Hybrid & Specialist Range
Variant Directory
All Kia Optima Variants - Engine Replacement Coverage
A full alphabetical listing of every Kia Optima trim covered by our network. All entries link to a dedicated variant page, where prices are further broken down by engine code, model year, and condition type. Click a live link to compare quotes.
Diesel Variants
2 1.7 CRDi2 2.0 CRDi3 1.7 CRDi3 2.0 CRDiGT-Line 2.0 CRDiSportswagon 2 1.7 CRDiSportswagon 3 2.0 CRDiSportswagon GT-Line 2.0 CRDi
Petrol Variants
2 1.7 GDI2 2.0 GDI3 2.0 GDIGT-Line 2.0 GDIGT-Line 2.4 GDISportswagon 2 2.0 GDISportswagon GT-Line 2.4 GDIHybrid / PHEV VariantsHybrid 2Hybrid 3PHEV 3PHEV GT-Line
Engine Codes
Kia Optima Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Kia Optima across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Diesel Engines
Extracted from detailed diesel engine families across Kia Optima variants.
Petrol Engines
Extracted from detailed petrol and performance engine families across Kia Optima variants.
Hybrid / Electrified Engines
Extracted from electrified powertrains and hybrid engine families used in Kia Optima variants.
Can't find your engine code?
Can't find your engine code? Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Kia Optima engine specialists. Every rebuilt engine comes with a minimum 12‑month unlimited mileage warranty.
Common Problems
Kia Optima Engine Problems
What It Costs to Fix & When Replacement Makes Sense
While the Kia Optima is generally reliable, high-mileage executive use and known weak points in the CRDi diesel and GDI petrol families can lead to costly failures. Issues with the D4HA timing chain tensioners, D4FD turbo actuators, and G4NA carbon buildup dominate replacement demand in the UK market. Every rebuilt Kia Optima engine supplied through our network includes upgraded internal components designed to resolve these original failure points, backed by a minimum 12-month unlimited mileage warranty. Use the breakdowns below to compare repair costs against full replacement and make an informed decision.
Every rebuilt engine includes a minimum 12-month unlimited mileage warranty.
1. Kia Optima Timing Chain Failure
Why D4HA Diesel & G4NA Petrol Engines Fail Prematurely
Affected Models
Kia Optima 3 & GT-Line 2.0 CRDi, Hybrid 2 & 3 (2011-2020, D4HA & G4NA)
Typical Failure Mileage
85,000 - 120,000 miles
Root Cause
The rear-mounted timing chain tensioner loses hydraulic pressure over time, allowing the chain to stretch and skip teeth on the sprockets.
Repair Options & Estimated Costs (UK ranges)
| Repair Tier | Dealer Price | Specialist Price | What It Involves | Longevity / Suitability |
|---|---|---|---|---|
Minor - Preventative Timing Chain & Tensioner Replacement Minor | £1,200 - £1,800 | £750 - £1,100 | Full strip of valve covers, new chain kit, tensioner, guides and seals | Extends engine life significantly if caught before valve/piston contact |
Intermediate - Cylinder Head & Valvetrain Repair Intermediate | £2,500 - £3,800 | £1,600 - £2,400 | Head removal, valve straightening/replacement, new gaskets, timing system overhaul | Viable only if damage is isolated to valves; high risk of recurrence |
Full Replacement - Rebuilt / Reconditioned Engine Best Value | £1,800 - £2,600 | £950 - £1,500 | Supply & fit of upgraded rebuilt unit with reinforced tensioner, new ancillaries, 12-month warranty | Best long-term value; eliminates all internal wear and original design flaw |
Our Recommendation
Best next step for kia optima timing chain failure
We advise catching chain rattle early. Once the chain has jumped a tooth, valve damage is likely and repair costs quickly exceed the value of the vehicle. A rebuilt Kia Optima engine with a reinforced tensioner is almost always the most cost-effective and reliable path.
Don't Let Engine Failure Write Off Your Kia Optima
Engine failures on high-mileage executive vehicles don't happen in isolation. Once a core component like the timing chain, DPF system, or turbo actuator fails, secondary damage to bearings, valves, and oilways follows quickly. EngineMarket makes it simple to bypass main dealer premiums by comparing fixed quotes from trusted UK Kia Optima engine specialists. Every unit includes upgraded components to resolve known failure points, bench-tested performance, and nationwide delivery. Get transparent pricing, a minimum 12-month unlimited mileage warranty, and expert supply & fit options in one place.
Compare Kia Optima Engine Replacement Prices Now →Kia Optima Engine Problems
What It Costs to Fix & When Replacement Makes Sense
While the Kia Optima is generally reliable, high-mileage executive use and known weak points in the CRDi diesel and GDI petrol families can lead to costly failures. Issues with the D4HA timing chain tensioners, D4FD turbo actuators, and G4NA carbon buildup dominate replacement demand in the UK market. Every rebuilt Kia Optima engine supplied through our network includes upgraded internal components designed to resolve these original failure points, backed by a minimum 12-month unlimited mileage warranty. Use the breakdowns below to compare repair costs against full replacement and make an informed decision.
Affected Models
Kia Optima 3 & GT-Line 2.0 CRDi, Hybrid 2 & 3 (2011-2020, D4HA & G4NA)
Typical Failure Mileage
85,000 - 120,000 miles
Root Cause
The rear-mounted timing chain tensioner loses hydraulic pressure over time, allowing the chain to stretch and skip teeth on the sprockets.
Minor - Preventative Timing Chain & Tensioner Replacement
Dealer
£1,200 - £1,800
Specialist
£750 - £1,100
Full strip of valve covers, new chain kit, tensioner, guides and seals
Extends engine life significantly if caught before valve/piston contact
Intermediate - Cylinder Head & Valvetrain Repair
Dealer
£2,500 - £3,800
Specialist
£1,600 - £2,400
Head removal, valve straightening/replacement, new gaskets, timing system overhaul
Viable only if damage is isolated to valves; high risk of recurrence
Full Replacement - Rebuilt / Reconditioned Engine
Dealer
£1,800 - £2,600
Specialist
£950 - £1,500
Supply & fit of upgraded rebuilt unit with reinforced tensioner, new ancillaries, 12-month warranty
Best long-term value; eliminates all internal wear and original design flaw
Our Recommendation
Best next step for kia optima timing chain failure
We advise catching chain rattle early. Once the chain has jumped a tooth, valve damage is likely and repair costs quickly exceed the value of the vehicle. A rebuilt Kia Optima engine with a reinforced tensioner is almost always the most cost-effective and reliable path.
Don't Let Engine Failure Write Off Your Kia Optima
Engine failures on high-mileage executive vehicles don't happen in isolation. Once a core component like the timing chain, DPF system, or turbo actuator fails, secondary damage to bearings, valves, and oilways follows quickly. EngineMarket makes it simple to bypass main dealer premiums by comparing fixed quotes from trusted UK Kia Optima engine specialists. Every unit includes upgraded components to resolve known failure points, bench-tested performance, and nationwide delivery. Get transparent pricing, a minimum 12-month unlimited mileage warranty, and expert supply & fit options in one place.
Compare Kia Optima Engine Replacement Prices Now →Disclaimer: All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EngineMarket’s UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Kia Optima and engine code. Every engine supplied through EngineMarket carries a minimum 12‑month unlimited mileage warranty - always confirm exact terms with your chosen supplier.
12-Month Warranty
Upgraded Components
Nationwide UK Delivery
Save vs Main Dealer Price
Replacement Engine Options
Kia Optima Engine TypesOptions, Costs & What to Expect
Every Kia Optima engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
All engine types include a minimum 12‑month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Kia Optima within hours.
Engine Sizes
Kia Optima Engines by SizeFind the Right Displacement for Your Variant
Every engine displacement officially fitted to the Kia Optima across UK generations is listed below, complete with compatible engine codes, production years and documented failure points to help you identify the exact replacement unit.
Kia Optima Diesel Engine Sizes
The 1.7L CRDi served as the entry-level diesel across both TF and JF generations, delivering a strong balance of fuel economy and low tax bands for UK fleet buyers and private owners. Its compact displacement and efficient combustion design made it a high-volume seller, though regular motorway use is recommended to keep the emissions system functioning correctly.
| Engine Code(s) | D4FD |
| Compatible Models (UK) | Optima 2 & 3 Saloon and Sportswagon (2011-2020), early JF facelift models |
Common Failure Points
Watch for these known weak points
DPF clogging from urban driving cycles, turbo electronic actuator gear wear
Not sure which engine size your Kia Optima needs? Enter your registration number above - we’ll identify the exact displacement, engine code and compatible replacement options instantly. All engines supplied through EngineMarket include a minimum 12‑month unlimited mileage warranty from UK Kia Optima specialists.
Fuel Type
Kia Optima Engines by Fuel Type
Choose your Kia Optima engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early 1.7 CRDi diesel to the latest 2.4 GDI petrol and hybrid powertrains.
Kia Optima Diesel Engines
Kia Optima Diesel Engines
Diesel CRDi units powered both TF and JF generations, dominating UK Optima sales with strong economy and fleet appeal, though DPF and timing chain concerns drive most replacement enquiries.
Common Kia Optima Diesel Engine Families
D4FD - 1.7L CRDi, entry-level diesel for 2/3 trims, DPF sensitivity on urban use
D4HA - 2.0L CRDi, higher-output for GT-Line, timing chain tensioner wear at mileage
Found In
TF generation saloon (2011-2015) - D4FD 1.7L, D4HA 2.0L
JF generation saloon/Sportswagon (2016-2020) - D4HA 2.0L Euro 6
Known For
Excellent motorway fuel economy and low company car tax bands
DPF regeneration issues on short-journey, urban driving patterns
Timing chain tensioner wear on D4HA units beyond 90k miles
Strong UK replacement demand on high-mileage executive fleet vehicles
Typical Diesel Models
Optima 2 1.7 CRDi
Optima 3 2.0 CRDi
Optima GT-Line 2.0 CRDi
Optima Sportswagon 3 2.0 CRDi
Not sure which fuel type your Kia Optima has? Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12‑month unlimited mileage warranty from UK Kia Optima specialists.
Engine Years
Kia Optima Engines by YearWhat Was Fitted & When
This timeline covers every major engine change across the Kia Optima's UK production run (2011-2020), organised so owners can quickly identify their engine code and compare rebuilt engine prices from UK specialists.
2011 - TF Generation Launch
Major Platform Change
The Kia Optima arrived in the UK with the TF generation, introducing CRDi diesel and GDI petrol engines designed for executive saloon buyers seeking value and efficiency.
Key Changes
First UK-market Kia Optima saloon launched with front-wheel drive platform
D4FD 1.7L CRDi and D4HA 2.0L CRDi diesel engines introduced alongside G4NA 2.0L GDI petrol
6-speed manual and automatic transmissions offered across the range
Initial trim levels: 2 and 3 with comprehensive standard equipment
Known For
Strong value proposition versus German executive saloon rivals
D4FD engines sensitive to urban DPF clogging without regular motorway use
G4NA petrol units generally reliable but watch for carbon buildup on intake valves
Early TF models now entering high-mileage replacement territory in UK market
Main Engines
D4FD - 1.7L diesel (Optima 2 & 3, 136hp)
D4HA - 2.0L diesel (Optima 3, 136hp)
G4NA - 2.0L petrol (Optima 2 & 3, 166hp)
G4FD - 1.7L petrol (early Optima 2, 135hp)
Popular Models
Kia Optima 2 1.7 CRDi
Kia Optima 3 2.0 CRDi
Kia Optima 2 2.0 GDI
Engine Codes Covered
D4FDD4HAG4NAG4FD
Common Replacement Enquiries
Kia Optima D4FD engine replacement
Kia Optima 1.7 CRDi DPF problem
Kia Optima G4NA timing chain noise
Get quotes for 2011 Kia Optima replacement engines
2011 - TF Generation Launch
Major Platform Change
The Kia Optima arrived in the UK with the TF generation, introducing CRDi diesel and GDI petrol engines designed for executive saloon buyers seeking value and efficiency.
Key Changes
First UK-market Kia Optima saloon launched with front-wheel drive platform
D4FD 1.7L CRDi and D4HA 2.0L CRDi diesel engines introduced alongside G4NA 2.0L GDI petrol
6-speed manual and automatic transmissions offered across the range
Initial trim levels: 2 and 3 with comprehensive standard equipment
Known For
Strong value proposition versus German executive saloon rivals
D4FD engines sensitive to urban DPF clogging without regular motorway use
G4NA petrol units generally reliable but watch for carbon buildup on intake valves
Early TF models now entering high-mileage replacement territory in UK market
Main Engines
D4FD - 1.7L diesel (Optima 2 & 3, 136hp)
D4HA - 2.0L diesel (Optima 3, 136hp)
G4NA - 2.0L petrol (Optima 2 & 3, 166hp)
G4FD - 1.7L petrol (early Optima 2, 135hp)
Engine Codes Covered
D4FDD4HAG4NAG4FD
Popular Models
Kia Optima 2 1.7 CRDi
Kia Optima 3 2.0 CRDi
Kia Optima 2 2.0 GDI
Common Replacement Enquiries
Kia Optima D4FD engine replacement
Kia Optima 1.7 CRDi DPF problem
Kia Optima G4NA timing chain noise
Get quotes for 2011 Kia Optima replacement engines
Year Finder
Not sure which year your Kia Optima was built?
Not sure which year your Kia Optima was built? Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12‑month warranty from UK Kia Optima specialists.
FAQ
Kia Optima Engine ReplacementFrequently Asked Questions
Question 1
How much does a Kia Optima engine replacement cost?
A Kia Optima engine replacement typically costs £495-£1,850 for a rebuilt unit, depending on engine code, variant and condition. Used engines start lower but carry higher risk, while reconditioned units with warranty offer the best balance of value and reliability for UK owners. Supply and fit adds £350-£650 labour.
Key points
- • D4FD 1.7L CRDi rebuilt engines average £495-£1,200 supply only
- • D4HA 2.0L CRDi units range £550-£1,450 depending on mileage
- • G4NA petrol engines cost £600-£1,400 for rebuilt replacement units
- • Hybrid variants require specialist verification adding £200-£400 to baseline pricing
Question 2
What engine code is in my Kia Optima?
Your Kia Optima engine code appears on the engine block stamp, VIN decoder, or V5C logbook. Common codes include D4FD (1.7L diesel), D4HA (2.0L diesel), and G4NA (2.0L petrol). Enter your registration above for instant code identification and compatible replacement options.
Key points
- • D4FD denotes the 1.7L CRDi diesel fitted to early Optima 2 trims
- • D4HA identifies the 2.0L CRDi powering 3 and GT-Line variants
- • G4NA marks the 2.0L GDI petrol used across multiple trim levels
- • Hybrid models combine G4NA with electric motor for 199hp combined output
Question 3
Is the Kia Optima D4HA timing chain problem serious?
Yes, Kia Optima D4HA timing chain tensioner wear is a documented failure pattern affecting engines beyond 90,000 miles. Ignoring rattling noises can lead to chain skip, valve damage and catastrophic engine failure requiring full replacement rather than repair.
Key points
- • Timing chain rattle on cold start indicates tensioner wear requiring inspection
- • Chain skip can bend valves, turning a £750 repair into £1,500 replacement
- • Rebuilt D4HA engines include upgraded tensioners addressing the original design weakness
- • Regular oil changes with ACEA C3 synthetic oil extend tensioner service life
Question 4
Will a Kia Optima D4FD engine fit my D4HA model?
No, Kia Optima D4FD and D4HA engines are not directly interchangeable despite both being CRDi diesels. Different mounting points, ECU mapping, and turbo configurations mean like-for-like replacement is strongly recommended to avoid compatibility issues and warranty voidance.
Key points
- • D4FD 1.7L and D4HA 2.0L have different block dimensions and mounts
- • ECU software and immobiliser pairing require exact engine code matching
- • Turbo actuator and DPF configurations differ between the two engine families
- • Specialist verification is essential before attempting any cross-code engine swap
Question 5
How long does a reconditioned Kia Optima engine last?
A properly reconditioned Kia Optima engine from EngineMarket typically lasts 80,000-120,000 miles with regular servicing, backed by a minimum 12-month unlimited mileage warranty. Longevity depends on oil change intervals, driving style, and addressing known failure points like timing chains during the rebuild.
Key points
- • Reconditioned units replace worn bearings, seals, and gaskets with new components
- • Upgraded timing tensioners and oil pumps address original design weaknesses
- • 12-month unlimited mileage warranty covers defects in materials and workmanship
- • Regular oil changes every 12,500 miles extend rebuilt engine service life
Question 6
Is a Kia Optima engine ULEZ compliant?
Kia Optima engines from 2016 onwards with Euro 6 certification are ULEZ compliant in London and other UK clean air zones. Pre-2016 Euro 5 diesel engines like early D4FD units are not compliant and incur daily charges unless replaced with a Euro 6 unit.
Key points
- • JF generation Optima (2016-2020) D4HA engines meet Euro 6 emissions standards
- • TF generation (2011-2015) diesel engines typically carry Euro 5 certification only
- • Petrol G4NA and G4KE engines generally meet ULEZ requirements across all years
- • Verify your specific vehicle's emissions class via the TfL ULEZ checker tool
Question 7
Should I repair or replace my Kia Optima engine?
Replace your Kia Optima engine if diagnostic costs exceed £1,000 or if multiple major components have failed. Repair makes sense only for isolated, minor faults on low-mileage engines. Rebuilt engines offer better long-term value with warranty protection for high-mileage executive vehicles.
Key points
- • Major failures like timing chain skip or piston damage warrant full replacement
- • Minor issues like sensor faults or injector seals can be cost-effectively repaired
- • Rebuilt engines include upgraded components addressing original failure patterns
- • Supply and fit packages from £350 labour simplify the replacement process
Question 8
Do you offer supply and fit for Kia Optima engines?
Yes, EngineMarket connects you with vetted UK specialists offering Kia Optima engine supply and fit services nationwide. Labour typically adds £350-£650 to the engine price, with mobile fitting available in many areas for executive saloon owners prioritising convenience and specialist installation.
Key points
- • Supply and fit includes engine delivery, installation, and post-fit testing
- • Specialists handle ECU coding, ancillary transfers, and emissions system calibration
- • Mobile fitting available in major UK cities for added convenience
- • All fitted engines carry the same 12-month unlimited mileage warranty
Question 9
What is the most reliable Kia Optima engine?
The Kia Optima D4FD 1.7L CRDi diesel is generally considered the most reliable engine, offering proven longevity with proper maintenance. Petrol G4NA units are also solid but watch for carbon buildup, while the higher-output D4HA and G4KE engines demand stricter servicing to avoid known failure points.
Key points
- • D4FD 1.7L CRDi has the simplest design and fewest documented failure patterns
- • G4NA 2.0L petrol offers smooth operation but requires walnut blasting at high mileage
- • D4HA 2.0L diesel delivers more power but needs timing chain monitoring
- • Regular oil changes with ACEA C3 synthetic oil extend all engine lifespans
Question 10
What warranty comes with a Kia Optima replacement engine?
Every Kia Optima replacement engine supplied through EngineMarket includes a minimum 12-month unlimited mileage warranty covering defects in materials and workmanship. Reconditioned and rebuilt units carry the strongest coverage, while used engines may have shorter terms - always confirm exact warranty details with your chosen supplier before purchase.
Key points
- • 12-month unlimited mileage warranty applies to all reconditioned and rebuilt engines
- • Warranty covers internal components, gaskets, seals, and machining defects
- • Labour for warranty claims must be performed by an approved specialist workshop
- • Keep full service records to maintain warranty validity throughout the coverage period
Why Choose Us
Why UK Kia Optima Owners Trust EngineMarket
Join thousands of UK drivers who compare Kia Optima engine prices through our network of trusted specialists - every rebuilt and reconditioned unit backed by a minimum 12‑month unlimited mileage warranty and nationwide delivery.
Trusted Kia Optima Engine Suppliers
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UK Engine Replacement Services for Kia Optima
Covering every variant from 2 to GT-Line, with supply‑only or full supply & fit available nationwide.
Find the best Kia Optima engine replacement near you
Compare engine prices for Kia Optima in the UK and get competitive quotes from garages near you.
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