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G20 B48

BMW 3 Series · Sedan · 2019–

2.0L modular turbo four — far stronger chain and cooling than N20.

Production run

2019–now

Engines covered

5

Avg. part price

—

19902026

Interactive systems map

Inspect the G20 B48

Tap a hotspot to inspect that system

Systems map

Where it goes wrong

Each numbered hotspot counts the documented failure points in that area. Select one to see the specifics for this chassis and engine.

Failure points by system

Cooling1

Intake2

Fuel2

Documented issues per engine

4

B46

4

B48

4

B58

4

B47

4

B57

Known weak points

What breaks on the G20 B48

Coolant leaks at the pumpDiagnose →Vacuum pump seepageDiagnose →Carbon buildup at high mileageDiagnose →Charge pipe couplersDiagnose →

Guides & playbooks

G20 B48 playbooks

Maintenance scheduleGive me a mileage-based maintenance schedule for a BMW 3 Series G20 B48, including the items the factory schedule skips.Buyer's inspectionI'm inspecting a used BMW 3 Series G20 B48. What exactly should I check, test drive and look for underneath?Build planPlan a staged performance build for a BMW 3 Series G20 B48 that stays reliable as a daily driver.Fault code lookupI have a fault code on my BMW 3 Series G20 B48. Walk me through what it means and how to confirm the cause.

Fits your G20 B48

Parts & tools

Full catalog & export

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