"Is the 5 Serisi 520d reliable, and what should you check?"
When buying a used BMW 5 Series 520d 2019 (G30 / G31 / F90), the most frequently mentioned issue is DPF Clogging and Sensor Problems. Timing chain tension/noise (rare) is also commonly reported.
Engine: B47
B47D20B · 520d · Used in this car from 2018-2024
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.
DPF Clogging and Sensor Problems
Often reported
The 2.0 diesel B47 engine in the 5 Series G30 is prone to incomplete DPF regenerations, especially in city or short-distance driving. Soot buildup leads to anti-pollution warning messages, power loss, and in recurring cases, the need for forced regeneration. Additionally, DPF-related sensors (electrodes, differential pressure sensors) or related components (e.g., fuel filter heater relay) may fail, preventing regeneration or generating multiple fault codes.
Exhaust Emissions
Timing chain tension/noise (rare)
Often reported
Although the B47 engine was designed to reduce issues inherited from the N47, timing chain/tensioner wear is reported in high-mileage or poorly maintained examples.
Timing chain
EGR Valve and Cooler Clogging / Failures
Often reported
The EGR valve and cooler can become clogged or fail due to typical carbon deposits in modern diesel engines.
Exhaust Emissions
Turbocharger Wear or Failure
Often reported
Turbocharger wear, pressure drop, or breakage can occur, especially if oil maintenance is irregular or if particle ingress occurs due to dirty EGR/DPF.
Turbo
BMW 5 Serisi 520d technical specs
BMW 5 Serisi 520d (2019): boot 570 L; fuel use 4,9 l/100 km (urban 5,6 l/100 km · extra-urban 4,6 l/100 km); 0–100 in 8 s.
Boot capacity
570 L
Fuel consumption
4,9 l/100 km (urban 5,6 l/100 km · extra-urban 4,6 l/100 km)
What should I look for when buying a BMW 5 Series 520d?+
When buying a 2019 520d, check the service history, perform a test drive, and inspect engine/transmission warnings. The most commonly reported issues are: DPF Clogging and Sensor Problems; Timing chain tension/noise (rare); EGR Valve and Cooler Clogging / Failures.
What are the chronic problems of the BMW 5 Series 520d?+
The most commonly reported issues are: DPF Clogging and Sensor Problems; Timing chain tension/noise (rare); EGR Valve and Cooler Clogging / Failures.
Is the BMW 5 Series 520d reliable?+
Instead of a simple yes or no, it's necessary 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 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.