Used Peugeot 107 ECU

Yes, every Peugeot 107 has an ECU (engine control unit) regardless of engine size or fuel type — it manages fuelling, ignition timing, and emissions on both the 1.0 petrol and 1.4 HDi diesel variants. The 107 was sold in the UK from 2005 to 2014, covering one generation with a facelift around 2009, and all versions across that range are ECU-equipped. If you are shopping for a used unit, the engine code from your V5 or a VIN check is the single most important detail to give a breaker.

The 107 received a facelift in 2009, and while the basic platform and engine family carried over, ancillary and software calibration changes can occur across a production refresh, so a pre-facelift (2005–2008) ECU is not guaranteed to be a straight swap into a post-facelift (2009–2014) car. Confirm the exact part numbers and engine codes with the breaker against your registration before buying. This is especially important because ECUs are typically paired to the vehicle's immobiliser, and coding or programming work may be needed regardless.

The engine code matters far more than the year — two 107s from the same model year could have different ECU calibrations if one is a 1.0 petrol and the other is a 1.4 HDi diesel, and even within the same fuel type subtle software differences exist. Your engine code is printed on your V5 registration document or can be retrieved from a VIN check, and you should give this to the breaker rather than relying on year alone. Matching on year without the engine code is one of the most common ways buyers end up with an incompatible unit.

Trim level does not affect ECU fitment on the 107 — Urban, Sportium, Allure, and any other trim all used the same engine options, so the ECU follows the engine code and fuel type, not the badge on the car. You may notice cosmetic differences between donor and recipient cars when collecting other parts, but none of that affects whether the ECU is mechanically compatible. Always confirm the engine code match with the breaker, as that is the detail that actually determines compatibility.

Yes, gearbox type can affect ECU calibration — the 107 was available with a manual gearbox and also with an automated manual transmission (sometimes badged as a semi-automatic), and the ECU strategies for each can differ. When you contact a breaker, tell them both your engine code and your gearbox type to make sure the unit they supply matches your drivetrain setup. Fitting an ECU mapped for the wrong gearbox type could cause driveability problems even if the engine codes appear to match.

This is very likely — ECUs on the 107 are typically paired to the vehicle's immobiliser system, meaning a secondhand unit from a different car will usually need to be recoded or reprogrammed to your vehicle before it will allow the engine to start. This is not something a breaker can guarantee in advance, as it depends on your specific vehicle and the locksmith or auto-electrician you use. Factor in the cost of coding work when budgeting, and confirm the situation with the breaker and a suitable specialist before purchasing.