Mercedes-Benz A-Class 160 CDI Engine Replacement Compare Prices & Get Quotes

A replacement engine for an A160 CDI typically costs between £350 and £3,800 depending on the engine code and condition. Used OM668 units start from £350-£800, reconditioned from £800-£1,600, and fully rebuilt OM607 engines from £2,200-£3,800. Labour for supply & fit adds £400-£800.

• Used OM668 (W168 A160 CDI): £350-£800
• Rebuilt OM640 (W169 A160 CDI): £1,500-£2,800
• Rebuilt OM607 (W176 A160 CDI): £2,200-£3,800

It depends on the engine. The OM668 (W168, 1998-2004) and OM640 (W169, 2004-2012) use timing chains designed to last the lifetime of the engine. The OM607 (W176 facelift, 2013-2015) is a Renault-sourced engine with a timing belt that must be replaced every 80,000-100,000 miles. Enter your registration above to confirm which engine is fitted to your car.

• OM668/OM640: timing chain - durable, no scheduled replacement
• OM607: timing belt - replace every 80k-100k miles
• Belt failure is catastrophic - do not exceed the interval

On OM668 and OM640 engines (W168 and W169), the most common symptom is a rattling noise from the engine on cold start. Other signs include poor performance, increased fuel consumption, and the engine management light illuminating. If you hear any unusual sounds, have the timing system inspected immediately.

• Cold-start rattle from the timing cover area
• Poor performance and reduced fuel economy
• Engine management light activation

It depends on the generation and condition. A W168 A160 CDI is typically worth £800-£2,500 - a full engine replacement often exceeds the car's value, making a used engine or targeted repair more economical. A W169 A160 CDI is worth £1,500-£4,000 - a rebuilt OM640 engine (£1,500-£2,800) can be a worthwhile investment if the car is in good condition. A W176 A160 CDI is worth £4,000-£8,000 - a rebuilt OM607 engine is usually within the car's value.

• W168 (1998-2004): used engine or targeted repair
• W169 (2004-2012): rebuilt OM640 viable for good condition cars
• W176 (2013-2015): rebuilt OM607 usually justifies cost

Power loss in the A160 CDI can be caused by several issues depending on the engine. On OM668 and OM640 engines, timing chain wear can cause cam timing drift, reducing power. Clogged fuel injectors can lead to poor engine performance. On OM607 engines, a failing timing belt can cause timing drift. A diagnostic check with Mercedes STAR or compatible equipment is essential to identify the exact cause.

• Timing chain wear (OM668/OM640) - rattling + power loss
• Clogged injectors - rough idling and misfires
• Timing belt wear (OM607) - power loss + risk of failure

The OM668 is a 1.7-litre Mercedes-designed diesel used in the W168 A160 CDI (1998-2004), producing 60 hp with a timing chain. The OM640 is a 2.0-litre Mercedes-designed diesel used in the W169 A160 CDI (2004-2012), producing 82 hp with a timing chain. The OM607 is a 1.5-litre Renault K9K-sourced diesel used in the W176 A160 CDI (2013-2015), producing 90 hp with a timing belt.

• OM668: 1.7L, 60 hp, timing chain, W168 (1998-2004)
• OM640: 2.0L, 82 hp, timing chain, W169 (2004-2012)
• OM607: 1.5L, 90 hp, timing belt, W176 (2013-2015)