Mercedes Benz SLS AMG GT Engine Replacement Compare Prices & Get Quotes

Short summary: A rebuilt M159.972 engine for the SLS AMG GT costs £18,500-£25,000 supply-only. Fitting adds £1,500-£2,500 depending on complexity - AMG V8 and dry sump work requires specialist knowledge.

• SLS AMG GT (M159.972): rebuilt unit £18,500-£25,000; used engine from £10,000
• M159.972 dry sump pump rebuild: £2,200-£3,400 at specialist
• M159.972 exhaust manifold replacement: £1,800-£3,000 at specialist

Short summary: Low oil pressure warnings at speed, bearing knock, or oil analysis showing elevated bearing metals are the classic warning signs on the M159.972 engine. The GT's dry sump system is critical to engine health.

• Low oil pressure warnings at speed
• Bearing knock or metallic tapping noise
• Oil analysis with elevated copper, lead or tin levels
• If caught early, pump seal refresh costs £2,200-£3,400 at specialist

Short summary: The GT's high-output calibration and track use subject the exhaust manifold to extreme thermal cycling stress. Over time, this can cause cracking, leading to exhaust leaks, loss of power, and potential engine bay fire risk.

• Exhaust noise or ticking from the engine bay
• Loss of power or reduced performance
• Check engine light with exhaust-related codes
• If caught early, manifold replacement costs £1,800-£3,000 at specialist

Short summary: The M159.972 is a hand-built masterpiece - the most powerful naturally aspirated V8 in the SLS range before the Black Series. However, its track-focused design creates unique challenges. Dry sump pump wear, exhaust manifold cracking, and valve train fatigue are the most critical issues. With regular maintenance and proactive attention, the engine is fundamentally strong.

• Hand-built AMG construction with individual builder plaque
• Dry sump lubrication requires specialist oil pressure calibration
• Exhaust manifold cracking is a known issue on track-used examples
• Regular oil analysis is essential for track-used GT examples

Short summary: Properly maintained M159.972 engines routinely reach 80,000-100,000 miles before major work, but track-used examples may require dry sump attention from 40,000 miles. Regular oil analysis is essential for track-used GT examples.

• M159.972 (SLS AMG GT): 80,000-100,000 miles with regular servicing
• Dry sump inspection recommended from 40,000 miles on track-used examples
• Oil analysis every 5,000 miles for track-used vehicles
• Service interval is 10,000 miles or 12 months - use Mercedes-spec MB 229.5 oil

Short summary: Yes, if the GT is otherwise in good condition with no rust or major transmission faults. A rebuilt M159.972 costs £18,500-£25,000 - far less than replacing a £80,000-£120,000 vehicle. Investment-grade documentation, dyno certification, and unlimited warranty preserve provenance while restoring performance.

• SLS AMG GT values: £80,000-£120,000 depending on condition and mileage
• Rebuilt engine with upgraded components fixes original weak points
• Supply & fit typically £20,000-£27,500 depending on engine code
• New engine includes 12-month unlimited mileage warranty