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BMW M40 engine: specs and known issues

The BMW M40 is a naturally aspirated inline-four petrol engine with a 1.6- and 1.8-liter displacement, produced 1987–1994, per Wikipedia. We do not have repair prices for it yet.

Specs and history from Wikipedia (revisions listed below)

M40 at a glance

Production1987–1994[1]
ConfigurationNaturally aspirated straight-4[1]
Displacement1596 cc (97.4 cu in) / 1796 cc (109.6 cu in)[1]
Fuel typePetrol[1]
ValvetrainSOHC[1]
BlockCast iron[1]
Cylinder headAluminium[1]
Fuel systemFuel injection[2]

Cars with the M40

Cars and chassis codes named in Wikipedia's article on this engine. It can include related or successor models, so treat it as a lead and check your exact car. Open a linked model to see its repair costs.

Model pages for the M40

Chassis pages whose cars, per Wikipedia, used this engine.

E30 3 SeriesE36 3 SeriesE34 5 Series
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Common questions

When was the BMW M40 engine produced?

1987–1994, per Wikipedia.

Sources

  1. Wikipedia: BMW M40 (revision 1347952073, read 2026-10-23)
  2. Wikipedia: List of BMW engines

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