[6] The redline is 8,250 rpm,[2] and the specific output of 74.6 kW (100.0 bhp) per litre is amongst the highest of naturally aspirated production car engines.

Features include: A well-known problem with the S85 is premature rod bearing wear, which can occur around 80,000 km or roughly 50,000 miles.

Hence, replacement of rod bearings preemptively as part of preventive maintenance and shortening oil change intervals are paramount to engine longevity.

The VANOS solenoids and high-pressure oil lines can degrade over time, leading to erratic performance or engine fault codes.

This issue is particularly problematic due to the engine’s dependence on precise throttle control for its high-performance output.