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E85 Roadster · Coupe

BMW Z4 · Roadster · Coupe · 2002–2008

First Z4 — flame-surfaced and hydraulically steered on early cars.

Production run

2002–2008

Engines covered

3

Avg. part price

—

19902026

Interactive systems map

Inspect the E85

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

Engine3

Cooling1

Fuel1

Documented issues per engine

4

N52

5

M54

4

S54

Known weak points

What breaks on the E85

Valve cover gasket oil leaksDiagnose →Electric water pump failureDiagnose →DISA valve failureDiagnose →CCV / oil separatorDiagnose →Rod bearing wear (service interval item)Diagnose →VANOS hub bolts and rebuildDiagnose →

Guides & playbooks

E85 playbooks

Maintenance scheduleGive me a mileage-based maintenance schedule for a BMW Z4 E85, including the items the factory schedule skips.Buyer's inspectionI'm inspecting a used BMW Z4 E85. What exactly should I check, test drive and look for underneath?Build planPlan a staged performance build for a BMW Z4 E85 that stays reliable as a daily driver.Fault code lookupI have a fault code on my BMW Z4 E85. Walk me through what it means and how to confirm the cause.

Fits your E85

Parts & tools

Full catalog & export

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