How Much Does a Used BMW Engine Cost in the UK? [2025 Guide with Real-World Prices]

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S63 engine from mtautoparts.com

Image: S63 Engine from MT Auto Parts

If your BMW’s engine is on its last leg, you’re probably asking: how much does a used BMW engine cost in the UK? The short answer is—it depends. From high-performance M engines like the S63B44B to efficient daily drivers like the B48A20E, the cost of replacing a BMW engine varies significantly by model, engine code, mileage, and whether it's petrol, diesel, or hybrid.

In this guide, we break down estimated used BMW engine prices in the UK based on real listings from MT Auto Parts. Whether you're driving a 1 Series hatchback or an X6 M monster, you’ll get a clear sense of what to expect—and what to budget.

Why Go for a Used BMW Engine?

BMW engines are built to perform—but even the best don’t last forever. A failed timing chain, rod bearing issues, overheating, or oil starvation can mean game over for your engine. Replacing it with a used OEM BMW engine is a cost-effective way to keep your car on the road without paying new engine prices.

Buying from a specialist like MT Auto Parts ensures that the engine is:

  • Tested for reliability

  • Backed by a 30-day warranty

  • Clearly listed with mileage, photos, and condition

Real-World Prices: Used BMW Engine Cost Estimates (UK)

Below is an overview of estimated UK prices for popular used BMW engines for sale as of 2025, based on current MT Auto Parts listings. Prices include the engine only (labour not included) and reflect typical mileage and condition.

Engine Code

Model Examples

Fuel Type

Typical Mileage

Estimated Price (Used)

S63B44B

M5, M6, X5M, X6M

Petrol Twin-Turbo V8

50K–80K miles

£8,500 – £12,000

N63B44C

750i, 650i

Petrol Twin-Turbo V8

30K miles

£9,400

S58B30A

X3M, X4M

Petrol Twin-Turbo I6

38K miles

£7,999

B58B30C

X5 45e, 745e

Petrol Hybrid I6

10K–35K miles

£7,500 – £7,600

N55B30A

M135i, M235i, 335i

Petrol Turbo I6

50K–86K miles

£5,200 – £5,450

B48A20E

M135i, X1, 128ti

Petrol Turbo I4

10K–12K miles

£4,200 – £4,300

B48A20A

X1, X2, 320i

Petrol Turbo I4

<1K–30K miles

£2,300 – £3,700

B47C20B

118d, 120d

Diesel Turbo I4

14K–50K miles

£3,200 – £3,600

B37C15A

116d, 216d

Diesel Turbo 3-Cyl

50K miles

£1,999 – £3,000

B57D30B

530d, X5 30d

Diesel Twin-Turbo I6

10K–86K miles

£4,500 – £5,000

What Affects BMW Engine Prices?

Several factors influence how much a used BMW engine will cost:

  • Engine Type & Size: Larger engines (e.g. 4.4L V8s) cost much more than 2.0L or 1.5L variants.

  • Performance Tier: M engines like the S63 and S58 carry premium prices due to higher output and build quality.

  • Mileage: Lower mileage engines are priced higher due to extended lifespan.

What About Labour Costs?

Labour costs for BMW engine replacements in the UK typically range from £800 to £3,000, depending on:

  • Your BMW model (1 Series ≠ X6 M)

  • Local garage rates

  • Engine bay accessibility

  • If any extra components need replacing (e.g., turbos, ECU)

Always get multiple quotes and confirm that the garage has BMW experience.

Pro Tip: Confirm Your Engine Code Before Buying

Every BMW engine has a specific code, such as N55B30A, B48A20E, or B47C20B. You must confirm this code before purchasing a replacement to ensure full compatibility with your wiring, ECU, and mounts.

Need help? Just send us your VIN number—we’ll quickly identify the correct engine and help you source the best match.

Final Thoughts: Is a Used BMW Engine Worth It?

Absolutely—if it’s sourced correctly. A well-tested used BMW engine with verified mileage and warranty coverage can save thousands over buying new or reconditioned. Especially for models with proven engines like the B48, N55, or S63, it’s a smart way to restore your car’s performance without breaking the bank.

Curious which BMW F or G series engines are the most reliable? Discover the top performers in our latest blog post!

FAQ: Used BMW Engine Replacement in the UK

1. What is the average used BMW engine replacement cost in the UK?

Most used engines cost between £2,000 and £12,000, depending on model, engine type, and mileage. Labour adds on top.

2. Can I install the engine myself?

Unless you’re a qualified mechanic with specialist tools, it’s best left to professionals—especially for turbocharged or hybrid BMW engines.

3. What warranty do used engines come with?

At MT Auto Parts, every used BMW engine comes with a 30-day warranty and is tested before dispatch (T&C apply).

4. Is it cheaper to replace or rebuild a BMW engine?

A used engine swap is usually cheaper and quicker than a full rebuild, especially for common engines like the N55 or B48.

5. How do I find my BMW’s engine code?

Check your VIN plate, logbook, or engine cover. Still unsure? Contact us with your VIN, and we’ll do the rest.

Need Help or a Quote?

Looking to buy a used bmw engine​ with warranty and fast UK delivery? Browse our inventory at MT Auto Parts, or message us with your VIN. We'll match the right engine and help you get your BMW back on the road—reliably, and without surprises.
Location: United Kingdom

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