Overview
The story
BMW built the S65 from 2007 to 2013. It is derived from the S85 V10 and shares its basic architecture and aluminum construction. It won the International Engine of the Year award in its class every year from 2008 to 2012. A published reference
Specs
Versions
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4.0L V8 S65 A published reference
414 hp at 8,300 rpm and 295 lb-ft
Figures
- Displacement: 4.0L (3,999 cc) A published reference
- Bore × stroke: 92 × 75.2 mm A published reference
- Block: Aluminum A published reference
Watch out
Faults owners and the press report, and how to spot each one.
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Rod bearing wear Every version
One source so far
Check: Ask whether the rod bearings have been replaced, and for an oil analysis showing lead and copper.
BMW Tuning says there is no set window for failure and usually no warning, quotes a forum member putting failures at under 1% of engines, and says most enthusiasts recommend replacing the bearings every 50,000 to 80,000 miles. A seller's guide (unofficial)
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Throttle actuator failure Every version
One source so far
Check: Read the fault codes and look for the DSC and engine lights together.
BMW Tuning says a failed throttle actuator puts the engine in limp mode with the DSC and engine lights on, at mileages that vary. A seller's guide (unofficial)
Owning
Maintenance
No service schedule is added yet.
What owners and buyers say
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Sought after
No huge design flaws Every version
One source so far
BMW Tuning finds no huge flaws in its design and says it will run well over 100,000 miles with proper maintenance. A seller's guide (unofficial)