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E46 N42

BMW 3 Series · Sedan · Coupe · Touring · Cabrio · 1998–2006

2.0L Valvetronic four (E46).

Production run

1998–2006

Engines covered

7

Avg. part price

—

19902026

Interactive systems map

Inspect the E46 N42

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

Engine2

Fuel1

Electrical1

Documented issues per engine

4

M43

4

M52

5

M54

4

N42

4

N46

4

S54

4

M57

Known weak points

What breaks on the E46 N42

Timing chain and guidesDiagnose →Valvetronic motorDiagnose →Oil leaks at the eccentric shaft sensorDiagnose →Coil packsDiagnose →

Guides & playbooks

E46 N42 playbooks

Maintenance scheduleGive me a mileage-based maintenance schedule for a BMW 3 Series E46 N42, including the items the factory schedule skips.Buyer's inspectionI'm inspecting a used BMW 3 Series E46 N42. What exactly should I check, test drive and look for underneath?Build planPlan a staged performance build for a BMW 3 Series E46 N42 that stays reliable as a daily driver.Fault code lookupI have a fault code on my BMW 3 Series E46 N42. Walk me through what it means and how to confirm the cause.

Fits your E46 N42

Parts & tools

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