Timing chain failure/slack
Often reportedThe N47 engine family is known for timing chain issues: the chain may slacken or tensioners/pulleys may seize, causing noise at idle and startup; in severe cases, the chain can break.
Timing chain
When buying a used BMW 3 Series 320d 2015 (F30 / F31 / F34 / F80), the most frequently mentioned issue is timing chain failure/slack. Additionally, DPF clogging/regeneration and related performance loss are also commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
The N47 engine family is known for timing chain issues: the chain may slacken or tensioners/pulleys may seize, causing noise at idle and startup; in severe cases, the chain can break.
Timing chain
Owners report DPF clogging with ineffective regeneration, especially during city or short-distance driving. Symptoms include engine warning lights, power loss, frequent regeneration cycles, and sometimes the need for forced regeneration or replacement.
Exhaust Emissions
Italian technical discussions report failures in the high-pressure fuel pump and injectors, leading to symptoms ranging from starting difficulty to sudden power loss and engine stalling.
Fuel System
Italian forum reports indicate turbo failures (high-pitched whine, pressure loss, sudden power loss) in many 320d 163 HP models under various mileage and usage conditions.
Turbo
Same trim, different year
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.