Second Hand Vauxhall Agila Engine

The Vauxhall Agila ran in two distinct generations: the A-series (2000–2004) and the B-series (2004–2007), and these are fundamentally different cars built on different platforms, so engines are not a straightforward swap between them. That said, fitment ultimately comes down to the engine code rather than the model year badge, so your best starting point is to find your engine code from your V5 or a VIN check and give that to the breaker. If you are looking at an engine that crosses the A-to-B generation boundary, confirm compatibility directly with the breaker against your registration before purchasing.

No — the 1.0 and 1.2 are different engine families with different codes, and a 1.0 unit will not drop straight into a 1.2 bay without significant modification. Mechanical parts follow the engine code, not the displacement badge, so always match on engine code first. Check your code on the V5 or via a VIN check and supply it to the breaker so they can source the correct unit.

Trim level makes no difference to engine fitment on the Agila — Design, Club, and Expression are specification packages covering interior and cosmetic features, not mechanical ones. What matters is your engine code, fuel type, and gearbox type (manual or automatic), all of which you can confirm from your V5 or a VIN check. Do bear in mind that ancillary items such as brackets or mounts can vary, so confirm those details with the breaker against your registration.

The Agila A ran through to 2004 and the Agila B arrived from 2004, so a 2003 car is firmly in the A-series generation, but a 2004 engine could be from either generation depending on exact production date. The engine code is the safest guide here — match the code on your V5 to the donor engine code rather than relying on the year alone. Because this question sits right on the generation boundary, we strongly recommend confirming interchange with the breaker against your specific registration before buying.

This is an important consideration — on many modern vehicles the ECU can be paired to the car's immobiliser system, and dropping in a used engine with its original ECU may cause starting or security issues. We cannot state as fact exactly how this affects each Agila variant, so you should raise ECU pairing and immobiliser compatibility directly with the breaker before purchasing. A good breaker will be familiar with this question and can advise whether you need your own ECU reused or reprogrammed.

Yes, fuel type is one of the most important fitment factors for any used engine — a petrol unit and a diesel unit are entirely different engines and are not interchangeable. Always confirm that the donor engine matches your car's fuel type, and then cross-reference the engine code from your V5 to make sure you are getting an exact match. Supply your registration and engine code to the breaker so they can verify compatibility before you commit to a purchase.