"Is the 3 Serisi 320d reliable, and what should you check?"
When buying a used BMW 3 Series 320d 2013 (F30 / F31 / F34 / F80), the most frequently mentioned issue is timing chain failure/slack. Additionally, DPF clogging/regeneration and related performance drops are also commonly reported.
Engine: N47
N47D20C · 320d · Used in this car from 2008-2014
Strengths
Wide selection of versions and modifications
Economical for such power output
Watch-outs
Many problems with early diesel versions
Frequent oil leaks
Many versions have piezo injectors
Known engine issues
Timing chain driveEarly engines had low timing chain lifespan: guides wore out, chains stretched, and sharp teeth on the crankshaft sprocket accelerated the process. On updated N47TU or N47N engines, most weak points were eliminated.
Cracks in the blockThe aluminum block was initially designed without a special safety margin, and severe overheating could cause cracks between the second and third cylinders. With the update, the block was reinforced and such problems almost ceased.
Fuel systemAll engines in this series are equipped with a reliable Bosch Common Rail fuel system, but powerful versions with piezo injectors are quite demanding on fuel quality. Also, avoid driving with an empty tank, as the high-pressure pump may suck in air and start producing metal shavings.
Listed from most frequently reported, each with its source.
Timing Chain Failure/Slack
Often reported
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 breaks.
Timing chain
DPF Clogging/Regeneration and Related Performance Drops
Often reported
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
High-Pressure Fuel Pump and Injector Issues
Often reported
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
Turbocharger Failures
Often reported
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
BMW 3 Serisi 320d technical specs
BMW 3 Serisi 320d (2013): boot 440 L; fuel use 4,7 l/100 km (urban 5,9 l/100 km · extra-urban 4 l/100 km); 0–100 in 7.5 s.
Boot capacity
440 L
Fuel consumption
4,7 l/100 km (urban 5,9 l/100 km · extra-urban 4 l/100 km)
What should I look for when buying a BMW 3 Series 320d?+
When buying a 2013 model 320d, check the service history, test drive, and engine/transmission warnings. The most commonly reported issues are: timing chain failure/slack; DPF clogging/regeneration and related performance drops; high-pressure fuel pump and injector problems.
What are the common problems of the BMW 3 Series 320d?+
The most frequently reported issues are: timing chain failure/slack; DPF clogging/regeneration and related performance drops; high-pressure fuel pump and injector problems.
Is the BMW 3 Series 320d reliable?+
Instead of a simple yes/no, it's better to evaluate 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 records; brand, fuel, engine, and generation compatibility between the source vehicle and target vehicle are verified. Topics with insufficient evidence are not shown.