Mercedes Benz E Class E63 AMG Engine ReplacementCompare Prices & Get Quotes

A Mercedes Benz E Class E63 AMG engine replacement typically costs £4,500-£12,000+ supply-only, depending on the engine code. M156 complete used engines start from £4,100, M157 rebuilt units from £6,995, and M156 replacement motors average £10,149-£11,744. Specialist fitting adds £1,000-£2,000.

• M156 used: £4,100-£6,000; rebuilt: £9,000-£12,000
• M157 used: £3,570-£5,000; rebuilt: £6,995-£9,500
• M177 used: £7,000-£10,000; rebuilt: £11,000-£15,000

The M156 6.2L V8 in the E63 AMG is most notorious for head bolt failure. Early engines use bolts with insufficient material strength that can break, allowing coolant to leak into the combustion chamber. Engines with serial numbers before 60658 are affected. Camshaft adjuster wear and lifter tick are also reported.

• Head bolt failure can hydrolock the engine - catastrophic and expensive
• Preventative head bolt replacement is strongly recommended on affected cars
• A broken bolt repair can cost £5,500-£8,000 at a specialist

Yes - if the car is otherwise sound. A used E63 AMG typically commands £9,000-£60,000+ depending on generation and mileage. A rebuilt M156 engine with warranty costs £9,000-£12,000, which is often justified relative to the vehicle's value.

• W211/W212 E63 AMG values: £9,000-£35,000
• W213 E63 AMG values: £35,000-£60,000+
• A rebuilt engine with 12-month warranty costs less than depreciation on a newer car
• If the car has structural damage or transmission failure, evaluate replacing the whole vehicle instead

With proper maintenance and regular oil changes, E63 AMG engines can reach 100,000-150,000 miles. The M156 requires preventative head bolt replacement; the M157 is generally robust but needs camshaft adjuster attention; the M177 requires careful monitoring for bore scoring.

• M156: 100,000+ miles with head bolt upgrade
• M157: 120,000+ miles with regular maintenance
• M177: 100,000+ miles with careful monitoring
• Regular oil analysis is recommended for all AMG V8s

The E63 AMG has used three V8 engines across its lifetime. The M156 (2006-2011) is a 6.2L naturally aspirated V8 producing 514-518hp. The M157 (2011-2016) is a 5.5L twin-turbo V8 producing 525-585hp. The M177 (2016-present) is a 4.0L twin-turbo V8 with hot-vee design producing 571-612hp.

• M156: naturally aspirated, high-revving, head bolt concerns
• M157: twin-turbo, impressive reliability relative to output
• M177: hot-vee twin-turbo, most powerful, bore scoring risk

All E63 AMG engines use timing chains, not belts. Timing chain and tensioner wear is a known concern on higher-mileage M157 units. Cold-start rattle is the primary warning sign.

• M156: timing chain and camshaft adjuster wear possible
• M157: timing chain stretch and camshaft adjuster wear reported
• M177: timing chain inspection recommended from ~80,000 miles
• Regular oil changes (every 10,000 miles) are critical for timing chain longevity