"Is the 3 Serisi 325d reliable, and what should you check?"
When buying a used BMW 3 Series 325d 2011 (E90 / E91 / E92 / E93 / Facelift), the most frequently mentioned issue is: EGR valve / EGR cooler problems. Also, injector / common rail wear and (rare) timing chain issues are commonly reported.
Engine: N57
N57D30A · 325d · Used in this car from 2011-2013
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.
EGR valve / EGR cooler problems
Often reported
Recurring faults with the EGR valve or EGR cooler are reported on the B47 2.0 diesel engine in the 3 Series; can cause power loss, uneven throttle response, and the check engine light coming on.
Exhaust Emissions
Injector / common rail wear and (rare) timing chain issues
Often reported
Reports on 2.0 units indicate issues with injectors or the common rail system at high mileage or with poor fuel maintenance, manifesting as power loss, smoke, and rough running; timing chain issues have also been seen (rarely) in the BMW diesel family.
Fuel System
Turbo problems (Actuator/Wastegate) and Oil leaks
Often reported
Some reports for the G20 3 Series mention abnormal turbo noises (e.g., wastegate/actuator rattle), boost loss, and in worse cases, oil leaks from the turbo area resulting in blue/black smoke or performance drop.
Turbo
BMW 3 Serisi 325d technical specs
BMW 3 Serisi 325d (2011): boot 460 L; fuel use 5,7 l/100 km (urban 7,3 l/100 km · extra-urban 4,8 l/100 km); 0–100 in 7 s.
Boot capacity
460 L
Fuel consumption
5,7 l/100 km (urban 7,3 l/100 km · extra-urban 4,8 l/100 km)
What should I look for when buying a BMW 3 Series 325d?+
When buying a 2011 325d, check service history, test drive, and look for engine/transmission warnings. Most commonly reported issues: EGR valve / EGR cooler problems; injector / common rail wear and (rare) timing chain issues; Turbo problems (Actuator/Wastegate) and Oil leaks.
What are the chronic problems of the BMW 3 Series 325d?+
Most commonly reported issues: EGR valve / EGR cooler problems; injector / common rail wear and (rare) timing chain issues; Turbo problems (Actuator/Wastegate) and Oil leaks.
Is the BMW 3 Series 325d reliable?+
Instead of a simple yes/no, it's better to weigh the proven pros and cons together. This page lists 3 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 the source vehicle and target vehicle are verified. Topics with insufficient evidence are not shown.