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Opel 54° V6 (C25XE / L81)

V6 · petrol · 1993–present

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Also known as: c25xe, x25xe, y26se, x30xe, l81, l82 opel, 2.5 v6 opel, 3.0 v6 opel, y32se, z32se, b258i, b308, b308e, lb8, lw9

Opel's 54° V6 — the 2.5 C25XE and 3.0 L81 — in the Vectra, Omega and Calibra, in the Holden Commodore for export, and in the Saturn L-series and Vue.

A 54° V-angle is unusual and it is a packaging decision, taken so the engine would fit transversely where a 60° V6 would not. The consequence is that everything is tight, and the rear bank is against the bulkhead.

⚑ It is a belt-driven interference design with the belt at the BACK of the engine on the transverse cars, which turns a routine service item into a major job and is the reason so many of these were scrapped with the belt overdue. Ask about the belt before anything else.

Its recurring complaints are ignition and breathing: coil packs, a carboned throttle body, and inlet gaskets that harden and leak unmetered air, giving a lean idle that reads as a fuelling fault.

The Saturn cars wear it as the L81 and were sold as American vehicles, so a Saturn owner searching their own badge finds nothing — the Opel material is what applies.

Cars fitted with this engine

11 generations, across 5 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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