BMW 3 Series 335d Engine Replacement Compare Prices & Get Quotes

The cost to replace an engine in a BMW 335d varies by generation. For M57D30 engines in the E90, rebuilt units range from £4,500-£7,000. For N57D30 engines in the F30, rebuilt units range from £5,000-£8,500. Used engines start from around £1,200, while reconditioned units fall in the £2,500-£5,500 bracket. Specialist fitting adds approximately £800-£1,200 in labour for the straight-six diesel.

• Used M57/N57: £1,200-£3,500
• Reconditioned: £2,500-£5,500
• Rebuilt: £4,500-£8,500
• Labour (supply & fit): £800-£1,200 at specialist rates

The N57 engine in the F30 335d is known for timing chain stretch. The most common early warning sign is a metallic rattling noise from the engine, particularly on cold start. Other symptoms include rough idling, misfires, and in severe cases, complete engine failure.

• Rattling noise from the engine (cold start)
• Rough idling or misfires
• Loss of power
• Catastrophic failure if ignored - the chain can snap

The answer depends on your 335d's generation and condition. For E90 335d models worth £4,000-£10,000, a full engine replacement (£4,500-£7,000) is borderline and only makes sense if the car is in exceptional condition. For F30 335d models worth £8,000-£18,000, replacement is more viable but still requires careful consideration.

• E90 value: £4,000-£10,000
• F30 value: £8,000-£18,000
• Full rebuilt engine: £4,500-£8,500
• Timing chain replacement: £1,800-£2,800 (best value repair on N57)
• Swirl flap delete: £350-£650 (best value preventative maintenance on M57)
• Evaluate scrap value if replacement cost exceeds 60% of vehicle value

The M57D30 (2006-2012) features a cast-iron block, single-VANOS, and produces 286 hp. The N57D30 (2012-2019) features an aluminium block for weight reduction, Double-VANOS, and produces up to 313 hp in its highest state of tune. Both are 3.0-litre straight-six twin-turbo diesels.

• M57D30: Cast-iron block, 286 hp, swirl flap failure risk
• N57D30A: Aluminium block, 245 hp, timing chain stretch risk
• N57D30B/T1: Aluminium block, 313 hp, timing chain stretch risk

A full engine replacement on a BMW 335d typically takes 2-3 days for a specialist workshop, assuming the replacement engine is on hand. The straight-six diesel is well-understood by BMW specialists, but the engine's size and weight add complexity.

• Supply-only delivery: 1-3 working days (nationwide)
• Supply & fit: 2-3 days at the workshop
• Always confirm lead time with your chosen specialist

Yes. While the M57D30 and N57D30 are no longer in production, used, reconditioned, and rebuilt units remain readily available through UK engine specialists. EnginesMarket connects you with vetted suppliers who stock engines for all 335d generations - from the E90 through to the F30.

• Used M57/N57 engines: widely available from £1,200
• Reconditioned units: available from £2,500
• Rebuilt units: available from £4,500 with 12-month warranty
• All options available with supply & fit