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Mercedes Benz E Class Engine ReplacementCompare Prices & Save
Get quotes today from trusted UK Mercedes Benz E Class engine specialists. Compare prices on reconditioned, rebuilt and used engines - supply & fit available.
E Class Diesel Engines - from £1,500 to £4,500
-> Rebuilt units from £1,500 · Common codes: OM651, OM642, OM654, OM648
E Class Petrol Engines - from £1,500 to £4,200
-> Rebuilt units from £1,500 · Common codes: M274, M276, M271, M112
E Class AMG Engines - from £4,500 to £12,000
-> Rebuilt units from £4,500 · Common codes: M156, M177, M113
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3 Simple Stepsto Finding the Best Mercedes Benz E Class Replacement Engine
Get Instant Quotes from Mercedes - Benz Engine Specialists Across the UK - 100% free, no obligation. Most replacements completed within 3-5 days.
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Live UK Engine Market Data
What Are UK Drivers Paying for Mercedes Benz E Class Engine Replacement?
The table below shows typical UK rebuilt engine costs across Mercedes Benz E Class variants, covering documented failure causes, chassis generations, engine codes, and fuel types based on current market data.
Average Market Prices
- Mercedes Benz E Class (W213) E350d2016-2023£2,200-£4,500Oil cooler seal leakOM642Diesel 3.0L
- Mercedes Benz E Class (W213) E2002016-2023£1,800-£3,500Camshaft adjuster failM274Petrol 2.0L
- Mercedes Benz E Class (W213) E300e2016-2023£2,500-£5,000High-voltage battery failM274PHEV 2.0L
- Mercedes Benz E Class (W213) E63 S2016-2023£5,000-£11,000Cylinder bore wearM177Petrol 4.0L
- Mercedes Benz E Class (W214) E220d2023-present£2,200-£4,500AdBlue system faultOM654Diesel 2.0L
- Mercedes Benz E Class (W214) E450d 4Matic2023-present£3,000-£6,000Oil cooler seal leakOM656Diesel 3.0L
- Mercedes Benz E Class (W214) E2002023-present£2,000-£4,200Camshaft adjuster failM254Petrol 2.0L
- Mercedes Benz E Class (W211) E320 CDI2002-2009£1,200-£2,600Injector seal leakOM648Diesel 3.2L
- Mercedes Benz E Class (W211) E220 CDI2002-2009£1,100-£2,400Timing chain stretchOM646Diesel 2.1L
- Mercedes Benz E Class (W211) E200 Kompressor2002-2009£1,000-£2,200Camshaft adjuster failM271Petrol 1.8L
- Mercedes Benz E Class (W212) E220 CDI2009-2016£1,200-£2,800Timing chain wearOM651Diesel 2.1L
- Mercedes Benz E Class (W212) E350 BlueTEC2009-2016£1,500-£3,200Oil cooler seal leakOM642Diesel 3.0L
- Mercedes Benz E Class (W212) E2002009-2016£1,200-£2,800Piston crackM274Petrol 2.0L
- Mercedes Benz E Class (W212) E63 AMG2009-2016£4,500-£9,000Head bolt failureM156Petrol 6.2L
- Mercedes Benz E Class (W213) E220d2016-2023£1,800-£3,800Timing chain wearOM654Diesel 2.0L
Last updated: 22 May, 14:59
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Models We Cover
Mercedes Benz E Class Engine ReplacementAll Variants Covered
From the E220 CDI to the high-performance E63 AMG, our network of UK Mercedes Benz E Class engine specialists delivers competitive quotes on rebuilt, reconditioned and used units. A typical rebuilt E Class engine with a 12-month warranty ranges from £1,100 to £11,000 - supply & fit available nationwide.
Core Diesel Range
Specs150-170hp
Years2002-2016
Rebuilt£1,100-£2,800
Core Petrol Range
Performance & AMG Range
Later Generation Diesel
Variant Directory
Diesel Variants
E200 CDIE200dE220E220 CDIE220 BlueTECE220dE250 CDIE250 BlueTECE270 CDIE280 CDIE300E300 BlueTECE300dE320E320 CDIE320 BlueTECE330eE350E350 BlueTECE350 CDIE350dE400dE420 CDIE450dE500 Diesel (non-UK)E53 (non-UK diesel)
Petrol Variants
E160E180E200E200 KompressorE230E240E250E260E280E300E300eE320E350E350eE360E370E400E400eE420E430E450E460E500E550E60 AMGE63E63 SPerformance & Hybrid VariantsE63E63 AMGE63 SE63 S 4Matic+E300eE350eE400eE53 (US/other markets)E55 AMGE60 AMGNot sure which variant your Mercedes Benz E Class is? Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
Engine Codes
Mercedes Benz E Class Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Mercedes Benz E Class 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 Mercedes Benz E Class variants.
Petrol Engines
Extracted from detailed petrol and performance engine families across Mercedes Benz E Class variants.
Can't find your engine code?
Common Problems
Mercedes Benz E Class Engine Problems
What It Costs to Fix & When Replacement Makes Sense
Every rebuilt engine includes a minimum 12-month unlimited mileage warranty.
1. Mercedes Benz E Class OM651 Timing Chain Failure
Why 2.1 Diesel Engines Fail Prematurely
Affected Models
Mercedes Benz E Class E220 CDI, E220 BlueTEC, E250 CDI (2009-2016, OM651.924)
Typical Failure Mileage
60,000 - 100,000 miles
Root Cause
The simplex timing chain sits at the rear of the engine, making replacement a gearbox-out job. Chain stretch occurs when oil change intervals exceed 15,000 miles, allowing guide wear and tensioner fatigue.
Repair Options & Estimated Costs (UK ranges)
| Repair Tier | Dealer Price | Specialist Price | What It Involves | Longevity / Suitability |
|---|---|---|---|---|
Minor - Preventative Timing Chain & Tensioner Minor | £1,800 - £2,500 | £1,100 - £1,600 | Replacement of timing chain, tensioner, guides, and sprockets | 60,000-80,000 miles; only viable if caught before chain jumps |
Major - Valvetrain Overhaul Minor | £3,000 - £4,500 | £2,200 - £3,200 | Chain set plus replacement of damaged valves, lifters, and camshaft adjusters | 40,000-60,000 miles; requires head removal and specialist machining |
Full Replacement - Rebuilt Engine Best Value | £5,000 - £7,000 | £2,800 - £4,200 | Supply & fit of rebuilt OM651 with upgraded timing components and bench testing | 100,000+ miles; upgraded parts address original design weakness |
Our Recommendation
Best next step for mercedes benz e class om651 timing chain failure
On an E220 CDI worth £2,500-£5,000, preventative chain replacement at a specialist is the clear value play if you hear cold-start rattle. If the chain has already jumped and bent valves, a rebuilt engine often costs less than a dealer-led valvetrain rebuild - and you get a fresh bottom end with warranty.
Don't Let Engine Failure Write Off Your Mercedes Benz E Class
Whether your E Class diesel is suffering timing chain rattle, your V6 is weeping oil from the cooler seals, or your AMG is due preventative head bolts, EngineMarket makes it simple to compare prices from trusted UK Mercedes Benz E Class specialists. Every rebuilt engine in our network includes upgraded components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty and nationwide delivery. Compare prices, choose a specialist, and get back on the road without the main dealer premium.
Compare Mercedes Benz E Class Engine Replacement Prices Now →Mercedes Benz E Class Engine Problems
What It Costs to Fix & When Replacement Makes Sense
Affected Models
Mercedes Benz E Class E220 CDI, E220 BlueTEC, E250 CDI (2009-2016, OM651.924)
Typical Failure Mileage
60,000 - 100,000 miles
Root Cause
The simplex timing chain sits at the rear of the engine, making replacement a gearbox-out job. Chain stretch occurs when oil change intervals exceed 15,000 miles, allowing guide wear and tensioner fatigue.
Minor - Preventative Timing Chain & Tensioner
Dealer
£1,800 - £2,500
Specialist
£1,100 - £1,600
Replacement of timing chain, tensioner, guides, and sprockets
60,000-80,000 miles; only viable if caught before chain jumps
Major - Valvetrain Overhaul
Dealer
£3,000 - £4,500
Specialist
£2,200 - £3,200
Chain set plus replacement of damaged valves, lifters, and camshaft adjusters
40,000-60,000 miles; requires head removal and specialist machining
Full Replacement - Rebuilt Engine
Dealer
£5,000 - £7,000
Specialist
£2,800 - £4,200
Supply & fit of rebuilt OM651 with upgraded timing components and bench testing
100,000+ miles; upgraded parts address original design weakness
Our Recommendation
Best next step for mercedes benz e class om651 timing chain failure
On an E220 CDI worth £2,500-£5,000, preventative chain replacement at a specialist is the clear value play if you hear cold-start rattle. If the chain has already jumped and bent valves, a rebuilt engine often costs less than a dealer-led valvetrain rebuild - and you get a fresh bottom end with warranty.
Don't Let Engine Failure Write Off Your Mercedes Benz E Class
Whether your E Class diesel is suffering timing chain rattle, your V6 is weeping oil from the cooler seals, or your AMG is due preventative head bolts, EngineMarket makes it simple to compare prices from trusted UK Mercedes Benz E Class specialists. Every rebuilt engine in our network includes upgraded components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty and nationwide delivery. Compare prices, choose a specialist, and get back on the road without the main dealer premium.
Compare Mercedes Benz E Class 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 Mercedes Benz E Class and engine code. Every engine supplied through EngineMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier.
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Upgraded Components
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Replacement Engine Options
Mercedes Benz E Class Engine TypesOptions, Costs & What to Expect
Every engine type is available through our UK network with typical price ranges based on your E Class 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 Mercedes Benz E Class within hours.
Engine Sizes
Mercedes Benz E Class Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the Mercedes Benz E Class across all UK generations is listed below, with compatible engine codes, production years, power outputs and common failure notes.
Mercedes Benz E Class Diesel Engine Sizes
The smallest diesel option in the E Class range appeared in the W212 generation as an economy-focused entry point for fleet buyers. The OM626 1.6 CDI offered genuine 60+ mpg but was rarely specified on UK executive saloons, making replacement units less common than larger diesels.
| Engine Code(s) | OM626 |
| Compatible Models (UK) | E200 BlueTEC |
| Production Years | W212, 2013-2016 |
Common Failure Points
Watch for these known weak points
EGR valve clogging, DPF blockage from low-speed urban driving
Not sure which engine size your Mercedes Benz E Class 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 Mercedes Benz E Class specialists.
Mercedes Benz E Class Engines Fuel Type
Mercedes Benz E Class Engines by Fuel Type
Choose your Mercedes Benz E Class engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early W210 diesel workhorses to the latest W213 plug-in hybrids.
Mercedes Benz E Class Diesel Engines
Mercedes Benz E Class Diesel Engines
Diesel dominated E Class sales across W211, W212 and W213 generations, with the OM651 2.1 and OM642 3.0 V6 accounting for over 70% of UK replacement enquiries due to timing chain and oil cooler failures.
Common Engine Families
OM651 - 2.1 litre four-cylinder, timing chain stretch epidemic in E220 CDI/E250 CDI
OM642 - 3.0 litre V6, oil cooler seal failure on E320 CDI/E350 BlueTEC/E350d
OM654 - 2.0 litre four-cylinder, AdBlue system faults in W213 E220d
OM648 - 3.2 litre straight-six, injector seal leaks in W211 E320 CDI
OM647 - 2.7 litre five-cylinder, turbo vane sticking in W210/W211 E270 CDI
OM611 - 2.2 litre four-cylinder, injector issues in early W210 E220 CDI
Found In
W210 (1995-2002) - OM606, OM611, OM647, OM648
W211 (2002-2009) - OM611, OM646, OM647, OM648, OM642
W212 (2009-2016) - OM651, OM642
W213 (2016-2023) - OM654, OM642
W214 (2023-present) - OM654, OM656
Known For
Strong motorway economy and high-mileage durability
OM651 timing chain failures requiring gearbox-out replacement
OM642 oil cooler seals leaking into the engine Vee from 70k miles
AdBlue tank crystallisation and NOx sensor faults on BlueTEC models
Typical Models (UK)
E220 CDI, E220 BlueTEC, E220d
E250 CDI, E250 BlueTEC
E320 CDI, E350 CDI, E350 BlueTEC, E350d
E270 CDI, E200 CDI
E300 BlueTEC, E400d
Not sure which fuel type your Mercedes Benz E Class 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 Mercedes Benz E Class specialists.
Engine Years
Mercedes Benz E Class Engines by YearWhat Was Fitted & When
This timeline covers every major Mercedes Benz E Class engine change from 1995 to the present, helping owners identify their exact power unit and compare rebuilt engine prices from UK specialists.
1995 - 2002 - W210: The First Modern E-Class
Major Engine Changes6 engine highlights
The W210 introduced the E-Class name officially, replacing the 124 series, and brought multi-link rear suspension and improved aerodynamics.
Key Changes
First generation officially branded as E-Class (replacing 124 series)
Introduced OM606 diesel and M112/M113 V6/V8 petrol engines
4MATIC all-wheel drive available on select variants
Facelift in 1999 with updated lighting and interior
Known For
Rust issues on front wings and rear arches
OM606 diesel known as one of Mercedes' most robust engines
E55 AMG supercharged V8 a performance icon
Electronic throttle and suspension gremlins with age
Main Engines
OM606 - 3.0 litre diesel (E300 Diesel)
OM611 - 2.2 litre diesel (E220 CDI)
OM647 - 2.7 litre diesel (E270 CDI)
M111 - 2.0 litre petrol (E200)
M112 - 2.8/3.2 litre V6 petrol (E240/E280/E320)
M113 - 4.3/5.0/5.4 litre V8 petrol (E430/E500/E55 AMG)
Popular Models
Mercedes Benz E200
Mercedes Benz E220 CDI
Mercedes Benz E270 CDI
Mercedes Benz E320
Mercedes Benz E430
Mercedes Benz E55 AMG
Engine Codes Covered
OM606OM611OM647M111M112M113
Common Replacement Enquiries
OM606 injector pump timing issues
E220 CDI OM611 injector failure
W210 rust-related engine bay corrosion
Get quotes for 1995-2002 Mercedes Benz E Class replacement engines
1995 - 2002 - W210: The First Modern E-Class
Major Engine Changes6 engine highlights
The W210 introduced the E-Class name officially, replacing the 124 series, and brought multi-link rear suspension and improved aerodynamics.
Key Changes
First generation officially branded as E-Class (replacing 124 series)
Introduced OM606 diesel and M112/M113 V6/V8 petrol engines
4MATIC all-wheel drive available on select variants
Facelift in 1999 with updated lighting and interior
Known For
Rust issues on front wings and rear arches
OM606 diesel known as one of Mercedes' most robust engines
E55 AMG supercharged V8 a performance icon
Electronic throttle and suspension gremlins with age
Main Engines
OM606 - 3.0 litre diesel (E300 Diesel)
OM611 - 2.2 litre diesel (E220 CDI)
OM647 - 2.7 litre diesel (E270 CDI)
M111 - 2.0 litre petrol (E200)
M112 - 2.8/3.2 litre V6 petrol (E240/E280/E320)
M113 - 4.3/5.0/5.4 litre V8 petrol (E430/E500/E55 AMG)
Engine Codes Covered
OM606OM611OM647M111M112M113
Popular Models
Mercedes Benz E200
Mercedes Benz E220 CDI
Mercedes Benz E270 CDI
Mercedes Benz E320
Mercedes Benz E430
Mercedes Benz E55 AMG
Common Replacement Enquiries
OM606 injector pump timing issues
E220 CDI OM611 injector failure
W210 rust-related engine bay corrosion
Get quotes for 1995-2002 Mercedes Benz E Class replacement engines
Year Finder
Not sure which year your Mercedes Benz E Class was built?
Not sure which year your Mercedes Benz E Class 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 Mercedes Benz E Class specialists.
FAQ
Mercedes Benz E Class Engine ReplacementFrequently Asked Questions
Question 1
Is it worth replacing the engine on a high-mileage Mercedes E-Class?
Yes, if the car is otherwise sound and the replacement cost is under £4,000 supply and fit. E-Classes hold value better than most executive cars, making replacement viable even at 120,000+ miles.
Key points
- • A quality rebuilt OM651 or OM642 costs £1,500-£3,500 supply only
- • W211/W212 examples with full service history still command £3,000-£7,000 used
- • A replacement engine with warranty costs less than financing a newer car
- • Specialist fitting adds £500-£800, not dealer rates of £1,500+
Question 2
What is the most reliable Mercedes E-Class engine to buy used?
The OM648 3.2 straight-six diesel in the W211 (2002-2005) is widely regarded as bulletproof. The later OM654 2.0 diesel in post-2017 W213s is also proving very solid with proper maintenance.
Key points
- • OM648 injector seals fail but the bottom end is near-indestructible
- • OM654 avoids the timing chain issues of the OM651 completely
- • M276 3.5 petrol V6 is the most reliable petrol option
- • Avoid early OM651 (2009-2012) unless timing chain already done
Question 3
What are the common problems with the Mercedes E-Class OM642 V6 diesel?
The OM642's primary failure is oil cooler seal degradation - a £5 part requiring 8-10 hours of labour. EGR valves, PCV valves, and timing chain stretch also occur but less frequently.
Key points
- • Oil cooler seals fail around 70k-100k miles; cost £700-£1,100 at a specialist
- • Look for oil drips under the engine bay - that's the telltale sign
- • Front main bearing failure can occur if oil filters aren't pre-filled
- • Later 2014+ OM642s have improved seals but can still fail
Question 4
How much does a Mercedes E-Class engine replacement cost in the UK?
Supply-only rebuilt engines range from £1,200 for OM651 units to £5,000+ for OM656 six-cylinders. With specialist fitting, budget £1,800-£4,500 total for most diesel variants.
Key points
- • OM651 2.1 diesel: £1,200-£2,800 supply only
- • OM642 3.0 V6 diesel: £1,500-£3,500 supply only
- • OM654 2.0 diesel (2016+): £1,800-£3,800 supply only
- • M156 6.2 V8 AMG: £4,500-£9,000 supply only
- • Labour adds £400-£800 depending on specialist location
Question 5
What causes the OM651 timing chain to fail on E220 CDI models?
The simplex timing chain is mounted at the rear of the engine and stretches when oil changes exceed 15,000 miles. Extended service intervals are the primary culprit.
Key points
- • Chain stretch typically occurs between 60k-100k miles
- • Cold-start rattle is the first warning sign - don't ignore it
- • Gearbox-out job costs £1,100-£1,600 at a specialist
- • If the chain jumps, bent valves require a full rebuild or replacement
Question 6
Which Mercedes E-Class year has the best and worst engines?
Best: 2002-2005 W211 with OM648, or 2017+ W213 with OM654. Worst: 2009-2012 W212 with early OM651 timing chain issues and AdBlue teething problems.
Key points
- • 2006-2008 OM642s had the worst oil cooler seal failure rates
- • 2013-2016 M274 petrols suffer piston cracking
- • 2017 onward OM654 diesels are significantly improved
- • W213 E220d owners report 60+ mpg and £20 road tax
Question 7
Is the Mercedes E-Class E300e plug-in hybrid engine reliable?
The M274 petrol engine in the E300e suffers the same piston cracking issues as non-hybrid versions. The hybrid system itself is generally reliable, but two complex systems mean more potential failure points.
Key points
- • Piston failure typically occurs between 50k-90k miles
- • High-voltage battery inspection is essential during engine replacement
- • Hybrid variants are often £1k-£2k cheaper used - for good reason
- • Only specialist hybrid-trained fitters should work on these systems
Question 8
Should I buy a petrol or diesel Mercedes E-Class in 2026 considering ULEZ?
Both are ULEZ-compliant from 2015 onwards. Diesel still makes sense for high-mileage motorway drivers; petrol suits lower annual mileage and urban use. Choose based on driving pattern, not just emissions.
Key points
- • Euro 6 diesels (2015+) meet ULEZ and CAZ requirements
- • E220d returns 55-60 mpg real world vs 35-40 mpg for E200 petrol
- • Petrol E200 avoids AdBlue system failures common on BlueTEC diesels
- • Diesel OM654 tax can be as low as £20/year on post-2017 models
Question 9
How long does a Mercedes E-Class engine last?
With proper maintenance and 8,000-10,000 mile oil changes, most E-Class diesel engines reach 200,000-250,000 miles. OM648 and OM654 examples regularly exceed 300,000 miles in taxi and fleet use.
Key points
- • OM648 straight-six is known for 300k+ miles on original internals
- • OM651 can reach 200k+ with timing chain replaced once
- • OM654 in taxis has proven reliable beyond 150k miles
- • Short oil change intervals (8k miles) are critical for timing chain life
Question 10
Can I replace my E220d engine with an E350d engine?
Physically yes, but it's rarely cost-effective. The OM654 2.0 and OM642 3.0 V6 use different wiring looms, ECUs, gearboxes, and cooling systems. Stick with the correct engine code for your chassis.
Key points
- • Engine mounts and physical fitment may work, but electronics don't match
- • DVLA notification and insurance approval required for any swap
- • Specialist fabrication costs usually exceed selling the car and buying the desired variant
- • The 9G-Tronic gearbox is mapped specifically to each engine
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Why UK Mercedes Benz E Class Owners Trust EngineMarket
Join thousands of UK drivers who compare Mercedes Benz E Class 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.
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