BMW 3 Series 330d Engine ReplacementCompare Prices & Get Quotes

A BMW 3 Series 330d engine replacement typically costs £2,500-£5,500 for a rebuilt unit supply-only, or £3,500-£7,500 fitted by a specialist. Used engines start from around £1,200-£2,500, while reconditioned units range from £2,200 to £3,800 depending on the engine code. X-Drive models typically cost more due to the additional labour required.

• Prices vary by engine code - M57, N57 and B57 have different cost profiles
• Rebuilt engines carry a 12-month unlimited-mileage warranty
• Supply & fit adds £500-£1,500 in labour depending on the generation and drivetrain

The most common early warning is a rattling sound from the rear of the engine, particularly noticeable on startup or when revved. As wear progresses, the rattle becomes more persistent and may be accompanied by an engine management light or, in severe cases, engine failure.

• Rattling from the rear of the engine is the #1 symptom - don't ignore it
• The N57's timing chain is mounted at the rear (gearbox side), making replacement labour-intensive
• If caught early, a chain replacement (£1,500-£2,200) is far cheaper than a full engine (£3,500-£5,500)

It depends on the generation and the car's condition. For an E90 330d valued at £3,000-£6,000, a full rebuilt engine at £3,500-£5,500 may represent 60-100% of the car's value - often making a used engine or timing chain repair the better option. For an F30 330d valued at £6,000-£18,000 or a G20 330d valued at £18,000-£40,000, replacement is financially viable and usually justified.

• Check the vehicle's current market value before committing
• For sub-£5k E90s, consider a used engine (£1,200-£2,500) rather than a rebuild
• For F30 and G20 examples, a rebuilt unit with warranty is usually the smarter long-term investment

The M57 (1999-2008) is the earliest generation - a 3.0-litre six-cylinder turbodiesel with outputs ranging from 184hp to 231hp. The N57 (2008-2018) is its successor, with piezo injectors and outputs of 245-258hp. The B57 (2018-present) is the latest generation, featuring twin-stage turbocharging and 265hp.

• M57: older, swirl flap issues are the main concern
• N57: more powerful but timing chain and crankshaft bearing issues are documented
• B57: most powerful and generally most reliable, but AdBlue system issues can occur

A typical BMW 3 Series 330d engine replacement takes 2-4 days for a specialist workshop, assuming the replacement engine is already in stock. The N57's rear-mounted timing chain adds complexity, and X-Drive models require additional labour.

• Allow 2-4 days for supply & fit through a specialist
• Supply-only engines are typically dispatched within 1-2 working days
• X-Drive models add approximately 2-4 hours of labour

Every rebuilt and reconditioned BMW 3 Series 330d engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty. Used engines typically come with a shorter warranty (30-90 days) depending on the supplier - always confirm exact terms before purchasing.

• Rebuilt: 12 months / unlimited mileage minimum
• Reconditioned: typically 6-12 months
• Used: 30-90 days, supplier-dependent