"Is the 5 Serisi 520d reliable, and what should you check?"
The most frequently mentioned issue when buying a used BMW 5 Series 520d 2016 (F07 / F10 / F10M / F11 / LCI): Timing chain stretching/breakage and bearing damage from debris. Oil leaks and consumption are also commonly reported.
Engine: B47
B47D20A · 520d · Used in this car from 2015-2017
Known engine issues
EGR valveMost problems of this engine are related to the EGR system, called AGR here. In early years, the valve could clog at 30,000 km and a recall campaign was even conducted. When it sticks open, overheating causes the intake manifold to crack.
Intake cloggingThe second most frequent service issue is clogging of the intake manifold and ports in the cylinder head, leading to loss of power and unstable engine operation. In severe cases, the intake swirl flaps may stick and break off.
Timing chain stretchThe chain timing drive on B-series engines differs little from N-series predecessors and may require attention before 200,000 km under very active use. There is already a cost-effective procedure to replace these chains without removing the engine.
+1 more issues on the engine detail page
Known issues and risks
Listed from most frequently reported, each with its source.
Timing chain stretching/breakage and bearing damage from debris
Often reported
In the 520i's (184 hp) 2.0 N20 engine, there are many reports of premature timing chain stretching and wear of guides/tensioners. Debris from worn guides can enter the oil circuit, clog the oil strainer, reduce oil pressure, and cause severe bearing damage (bearing seizure).
Timing chain
Oil leaks and consumption
Often reported
Recurring oil leaks at typical gaskets and connection points (oil pan/cover gaskets, oil filter housing) of the N20 engine are reported, along with significant oil consumption in some cases.
Engine Internal
High-pressure fuel pump (HPFP) issues
Often reported
Abnormalities in the high-pressure fuel pump (HPFP) can cause extended cranking, power loss, misfires, warning lights, and limp mode. Symptoms typically appear at higher mileage.
Fuel System
Turbo and wastegate issues
Often reported
The turbocharger in the N20 engine is not commonly faulty, but on high-mileage or modified/chipped vehicles, wastegate rattle, performance loss, and erratic turbo boost behavior are reported.
Turbo
BMW 5 Serisi 520d technical specs
BMW 5 Serisi 520d (2016): boot 520 L; fuel use 4,7 l/100 km (urban 5,6 l/100 km · extra-urban 4,2 l/100 km); 0–100 in 7.9 s.
Boot capacity
520 L
Fuel consumption
4,7 l/100 km (urban 5,6 l/100 km · extra-urban 4,2 l/100 km)
What should I look for when buying a BMW 5 Series 520d?+
When buying a 2016 520d, check the service history, test drive, and look for engine/transmission warnings. The most commonly reported issues: timing chain stretching/breakage and bearing damage from debris; oil leaks and consumption; high-pressure fuel pump (HPFP) problems.
What are the common problems of the BMW 5 Series 520d?+
The most frequently reported issues: timing chain stretching/breakage and bearing damage from debris; oil leaks and consumption; high-pressure fuel pump (HPFP) problems.
Is the BMW 5 Series 520d 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 Difetti fault database records; the source vehicle is matched to the target vehicle by brand, fuel type, engine, and generation. Topics with insufficient evidence are not shown.