BMW 1 Series 118i Engine Replacement Compare Prices & Get Quotes

A BMW 1 Series 118i engine replacement typically costs £1,195-£2,800 for a reconditioned or rebuilt unit supply-only, depending on the engine code. With supply and fit, expect £2,300-£3,800 depending on the specialist and location.

• Used N46 engines: £750-£1,000
• Used N43 engines: £1,200-£1,700
• Reconditioned N43: £1,195-£1,600
• Rebuilt N13 with warranty: £2,100-£2,600
• Rebuilt B38 with warranty: £2,050-£2,800

The most common warning signs of timing chain failure in a BMW 1 Series 118i (N43 and N13 engines) include a rattling noise from the engine on cold start, rough idling, poor engine performance, and in later stages, the engine management light illuminating.

• Rattling noise lasting 1-2 seconds on cold start is the earliest warning
• Ignoring the rattle can lead to chain skipping or snapping
• A snapped timing chain on an N43 or N13 engine usually means catastrophic engine damage

A 2007-2015 BMW 1 Series 118i is typically valued at £2,500-£7,000. If your 118i is worth under £4,000, a full rebuilt engine may not be economically viable - consider a used engine or scrap the car. If your car is worth £5,500+ (low mileage, M Sport spec, good condition), a reconditioned engine with warranty is a sound investment.

• Vehicle value is the key factor in the decision
• Used engines offer a budget-friendly alternative
• Rebuilt engines with warranty suit owners keeping the car 2+ years

A BMW 1 Series 118i engine replacement typically takes 2-3 days for a specialist to complete, including removal of the old unit and fitting the replacement. Timing chain replacement alone (without full engine removal) can be completed in 1-2 days.

• Supply-only: engine delivered next working day in many cases
• Supply and fit: allow 2-3 working days
• Mobile fitting options available through some specialists

Both the BMW 118i and 120i share engine families but with different power outputs and sometimes different engine capacities. The 118i produces 127-140 hp depending on generation, while the 120i produces more power (up to 170 hp in later models).

• Same engine families - many parts are interchangeable
• 118i: 127-140 hp, lower torque output
• 120i: 150-170 hp (depending on generation), higher torque output

Yes - every rebuilt BMW 1 Series 118i engine supplied through EnginesMarket comes with a minimum 12-month unlimited-mileage warranty. This covers the engine against manufacturing defects and component failure, giving you peace of mind when investing in a replacement N46, N43, N13, B38 or B48 unit.

• 12-month warranty is standard on all rebuilt engines
• Some specialists offer extended warranty options
• Always confirm exact warranty terms with your chosen supplier