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BMW S14 engine: specs and known issues

The BMW S14 is a naturally aspirated inline-four petrol engine with a 2.0-, 2.3- and 2.5-liter displacement, produced 1986–1991, per Wikipedia. We do not have repair prices for it yet.

Specs and history from Wikipedia (revisions listed below)

S14 at a glance

Production	1986-1991	[1]
Configuration	Inline-4	[1]
Displacement	1990 cc (121.4 cu in) / 2302 cc (140.5 cu in) / 2467 cc (150.5 cu in)	[1]
Fuel type	Petrol	[1]
Valvetrain	DOHC	[1]
Block	Cast iron	[1]
Cylinder head	Aluminium	[1]

Cars with the S14

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 S14

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

E30 M3

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Before and after

Predecessor: None
Successor: None

Related engines

BMW M10 (1962–1988)
BMW M40 (1987–1994)
BMW M70 (1987–1994)
BMW M21 (1983–1991)
BMW M42 (1989–1996)

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Common questions

When was the BMW S14 engine produced?

1986-1991, per Wikipedia.

Sources

Wikipedia: BMW S14 (revision 1378732100, read 2026-10-23)