Also known as: 20ne, 20xe, 20se, x20se, x20xev, c20let, c20xe, c22ne, c24ne, y22xe, x22xe, family ii opel, c20sed, x20sed, x22se, c20xe opel, a16dms
Opel's 2.0 to 2.4 four — Family II — in the Vectra, Astra, Omega and Calibra, and across Vauxhall and Holden.
⚑ Read the code as a sentence and it stops being random. The first letter is the emissions generation — C, X, Y, Z, then A and B — the digits are the displacement, and the last letters say what it has. X20XEV is a Euro-2 2.0 with a catalyst and sixteen valves; C20LET is a Euro-1 2.0 turbo. Once that is clear the whole Opel range becomes legible.
It is belt-driven and it is an interference design, which on cars of this age with unknown history is the decision that matters.
Its recurring items are the era's: a distributor or DIS module that fails with heat, an idle control valve that carbons up and gives a hunting idle, and a crankshaft sensor whose failure presents as an intermittent no-start.
The C20LET and C20XE are the performance members and are heavily modified; a stamped code on a rebuilt one may no longer describe what is inside it. The Ecotec L850 that replaced the family is a different engine with its own page here.
Cars fitted with this engine
6 generations, across 2 makes. From the authored catalogue — an absent car means the catalogue has not reached it, not that the engine was never fitted.
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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