BMW Engine Replacement -Get Quotes from UK Specialists

A rebuilt BMW engine typically costs between £2,000 and £5,500 for common 2.0‑litre diesel units like the N47 and B47, while performance engines such as the S55 (M3/M4) or N63 V8 range from £7,000 to £12,000 fitted. Reconditioned units with upgraded components (timing chain kits, revised EGR coolers) cost 20–30% more than a used take‑out engine but include up to 24 months warranty. Fitting adds £400–£800 depending on the model – front‑wheel‑drive cars like the 1 Series (F40) are slightly faster, while X5 engine swaps require more labour. The price you see online often excludes delivery and VAT, so always request a full breakdown.

Four factors drive the price: engine size and rarity (a B58 straight‑six costs more than a B47 four‑cylinder), condition (rebuilt with warranty vs used as‑is), your vehicle's age (older E90 3‑Series engines are cheaper and faster to source than G20 units), and whether you choose supply‑only (£400–£800 less) or full supply‑and‑fit. Location also matters – labour rates in London and the South East are typically 20–30% higher than the North or Scotland. Our marketplace shows you itemised quotes from multiple specialists so you can see exactly what you're paying for, including delivery, fitting, and warranty.

In most cases, yes – especially if the chassis, gearbox, and bodywork are in good condition. A professionally rebuilt N47 or N57 diesel fitted for £2,500–£4,000 will often outlast the original unit because our network uses upgraded timing chains, revised EGR coolers, and new turbochargers. The alternative – selling the car as a non‑runner (typically £500–£1,500) and buying another used BMW – carries its own risks (unknown service history, hidden failures). On a 320d worth £4,000–£8,000, replacement is almost always the smarter financial decision. On a high‑mileage 1 Series worth under £2,000, replacement rarely makes sense.

A full supply‑and‑fit package includes sourcing a quality rebuilt or reconditioned engine matched to your exact engine code (e.g., N47D20C for a 2013 320d), removing the failed unit, transferring your ancillaries (injectors, turbo, manifolds), installing the replacement with new gaskets, oil, filters, and coolant, and a test drive to confirm everything works. The service also includes disposal of the old engine (often exchange basis) and a workmanship warranty (minimum 12 months). Fitting alone typically adds £400–£800 to the engine price – less for like‑for‑like swaps on common models like the 3 Series, more for X5/X6 or V8 models requiring subframe removal.

On common models like the 3 Series (F30 320d) or 1 Series (F20 118d), a like‑for‑like engine swap takes 3–5 working days once the specialist has the replacement unit. More complex models – X5 (E70/F15), 5 Series with V8, or M cars – can take 5–7 days because of additional disassembly and parts transfer time. The biggest variable is engine availability: our network stocks commonly replaced codes (N47, N57, N20, B48) for next‑day dispatch, but rarer codes (S85 V10, M57TU2) may take 5–10 days to source. Always ask your chosen supplier for their current lead time before committing.

Yes – every engine supplied through our network carries a minimum 12‑month unlimited mileage warranty as standard. Many specialists offer extended 24‑month coverage on rebuilt and remanufactured units at an additional cost (typically 10–15% of the engine price). The warranty covers major internal components: crankshaft, connecting rods, pistons, piston rings, cylinder head, valves, camshafts, timing chain, oil pump, and gaskets. Wear items (belts, hoses, spark plugs, filters) and external bolt‑ons (turbo, injectors, alternator) are usually covered for 3–6 months only – confirm exactly what's included with your supplier. A warranty is your best protection against unexpected failure.

A used (take‑out) engine is the cheapest option – typically £1,200–£2,500 for common N47 units – but it's an unknown quantity. It may have the same underlying failure (e.g., timing chain stretch) waiting to happen. A reconditioned engine (£2,200–£4,500 for a 2.0‑litre diesel) has been stripped, cleaned, inspected, and fitted with new components such as timing chains, gaskets, piston rings, and bearings. For failure‑prone BMW engines – N47 (timing chain), N57 (EGR cooler), N20 (timing chain guides) – we strongly recommend reconditioned with upgraded parts. A used engine makes sense only if you plan to sell the car within 12 months or the vehicle has little residual value.

EngineMarket connects you with a UK‑wide network of vetted BMW engine specialists, from independent garages in the West Midlands (a historic hub for BMW diesel rebuilders) to dedicated performance shops in Surrey and Essex handling M‑car engine swaps. Our registration lookup instantly matches your specific engine code – N47, B58, S63, etc. – to nearby suppliers who have that unit in stock and offer fitting. No need to search "BMW specialist near me" across multiple sites. Nationwide delivery is also available if you prefer to use your own local garage for fitting.

The most common catastrophic failures driving BMW engine replacement in the UK are: **N47/N47D20 2.0‑litre diesel** – timing chain stretch and guide failure (2007–2015, any 116d/118d/120d/316d/318d/320d). **N57 3.0‑litre diesel** – EGR cooler leaks causing hydro‑lock and turbo actuator failure (2008–2019, 330d/530d/X5 30d). **N20 2.0‑litre petrol** – timing chain guide failure (2011–2017, 520i/328i/X1/X3). **N63 4.4‑litre V8 petrol** – valve stem seal failure causing blue smoke and oil consumption (2008–2015, 550i/750i/X5 50i). **S55 3.0‑litre twin‑turbo** – crank hub spin on tuned/tracked M3/M4 cars. In all these cases, early detection rarely prevents the engine from needing full replacement – a rebuilt unit with upgraded components is the solution.

Always compare at least three quotes – prices for the same N47 engine can vary by £1,000+ depending on the supplier's location, warranty length, and whether they have the unit in stock. Choose a used engine if your budget is under £2,000 and you only need the car to last 12–18 months. Choose a reconditioned engine with upgraded components (new timing chain, revised EGR cooler, rebuilt turbo) if you plan to keep the BMW for 3+ years – the upfront premium pays for itself in reliability. Ask potential suppliers whether their price includes delivery, fitting, VAT, and the old engine exchange – hidden extras can add 30% to the headline figure. Use our comparison tool to see all‑inclusive quotes side by side.