"Is the 3 Serisi 335d reliable, and what should you check?"
When buying a used BMW 3 Series 335d 2014 (F30 / F31 / F34 / F80), the most frequently mentioned issue: Turbo failure and wastegate rattle. Also, high-pressure fuel pump (HPFP) failure is commonly reported.
Engine: N57
N57D30B · 335d · Used in this car from 2014-2020
Known engine issues
Swirl flapsCompared to the M57 diesel, the intake manifold flap system has been improved and they can no longer fall off and drop directly into the cylinders. However, they still get dirty and stick, so the intake needs cleaning every 100,000 km.
Timing chain stretchThe timing chains in this engine are quite durable and only stretch after 200,000 km, but their replacement is very complex and expensive because they are located on the flywheel side. Also, chain breaks occasionally occur due to tensioner failure.
Crankshaft damper pulleyAs in many diesel engines, a crankshaft damper pulley is used here, which is very expensive and often fails at 100,000–150,000 km. With pulley failure, the load on the crankshaft increases and it may crack.
+1 more issues on the engine detail page
Known issues and risks
Listed from most frequently reported, each with its source.
Turbo failure and wastegate rattle
Often reported
After turbo failures or regeneration, the vehicle may show low-end torque loss, rough running, and poor response; turbo replacement may be required. Additionally, wastegate bushing rattle and premature wear are commonly reported on N54 turbochargers, leading to performance loss, metallic noises, and in severe cases, turbo replacement.
Turbo
High-pressure fuel pump (HPFP) failure
Often reported
The high-pressure fuel pump (HPFP) is one of the most reported issues on this 3.0 N54 engine, causing early failures that trigger check engine light, power loss, and limp mode. Replacement is often necessary and costly.
Fuel System
Faulty fuel injectors
Often reported
Common injector failures on the N54 engine cause misfires, vibrations, check engine light, and power loss.
Fuel System
Warranty extensions and high repair costs
Often reported
BMW has offered warranty extensions in some markets (e.g., US) for HPFP, injectors, and wastegate, but not consistently in Europe, leading European owners to face high repair costs.
Fuel System
BMW 3 Serisi 335d technical specs
BMW 3 Serisi 335d (2014): boot 480 L; fuel use 5,4 l/100 km (urban 6,4 l/100 km · extra-urban 4,9 l/100 km); 0–100 in 4.8 s.
Boot capacity
480 L
Fuel consumption
5,4 l/100 km (urban 6,4 l/100 km · extra-urban 4,9 l/100 km)
What to look for when buying a BMW 3 Series 335d?+
When buying a 2014 335d, check service history, test drive, and engine/transmission warnings. Most commonly reported issues: Turbo failure and wastegate rattle; High-pressure fuel pump (HPFP) failure; Faulty fuel injectors.
What are the chronic problems of the BMW 3 Series 335d?+
Most commonly reported issues: Turbo failure and wastegate rattle; High-pressure fuel pump (HPFP) failure; Faulty fuel injectors.
Is the BMW 3 Series 335d reliable?+
Rather than a simple yes/no, it's best to weigh the proven pros and cons together. This page lists 4 verified findings.
How does Carbeak collect data?+
The cards on this page are derived from the Difetti fault database; brand, fuel, engine, and generation compatibility between source and target vehicle is verified. Topics with insufficient evidence are not shown.