BMW 3 Series 318ti Engine Replacement Compare Prices & Get Quotes

A used M44B19 engine typically costs £400-£900, while a reconditioned unit ranges from £1,200-£2,200 and a fully rebuilt engine with warranty costs £1,500-£4,000. Fitting adds £500-£1,000 depending on the specialist and your location.

• Used engines are the cheapest option but come with no warranty on internal condition
• Reconditioned engines are stripped, inspected and have worn parts replaced
• Rebuilt engines are fully machined and assembled to factory specification with a 12-month warranty

Common symptoms include poor low-end torque, a hesitation or flat spot when accelerating from low revs, rough idle, and increased fuel consumption. You may also hear a rattling noise from the front of the engine on cold start.

• VANOS solenoid failure is the most common cause
• Repair costs £250-£450 at a specialist
• Ignoring it can lead to reduced performance and increased wear on timing components

That depends on the condition of the car. A typical 318ti is worth £1,500-£6,000 [THIRD-PARTY]. If your car is in excellent condition with low mileage and good bodywork, a rebuilt engine at £1,500-£4,000 can be a worthwhile investment. For a sub-£3,000 car, a used engine or targeted repair is usually more cost-effective.

• Check the car's overall condition before committing
• A rebuilt engine adds longevity and reliability
• Always compare quotes before making a decision

A typical engine replacement takes 2-3 days for a specialist, including removal of the old unit, fitting the replacement, and testing. Some suppliers offer next-day delivery on used engines, but fitting always requires workshop time.

• Supply-only: 1-2 days for delivery
• Supply & fit: 2-3 days at the workshop
• Complex variants (e.g. N42 with additional sensors) may take longer

The M44B19 is a 1.9L unit fitted to the E36 Compact (1996-2000) with 140 bhp, while the N42B20 is a 2.0L unit fitted to the E46 Compact (2001-2004) with 143 bhp. The N42 features a more complex valvetrain and is more prone to timing chain tensioner wear and oil consumption.

• M44: simpler, more robust, easier to work on
• N42: more refined but requires stricter maintenance
• Both are naturally aspirated four-cylinder petrol engines

Yes - every rebuilt engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty. This covers manufacturing defects and component failure, giving you peace of mind. Always confirm exact warranty terms with your chosen supplier before purchase.

• 12-month warranty is standard across our network
• Unlimited mileage on most policies
• Supply & fit options include warranty on labour as well