[calibrax]

Note that the CDTi is not necessarily a 135. Some cars are 135 from the factory, some were converted by the dealers. So you cannot rely on using "CDT" or "CDTi" to determine the power level. The way is to check is to look up the version/variant on the V5C document and check it against the table (found elsewhere on here). This will tell you what it was when it left the factory. If it's a 115 at that point, then you need to check if it's had a dealer/xpart upgrade. You can find this out by a) looking for a receipt showing the upgrade has been done, or b) look for the "XPower 135" sticker on the passenger door 'B' pillar. If it has this, then it's a 135.

If you still haven't determined what it is after doing the above, then you can have a dealer check by putting the car on a T4.

My car is a 2004 model, it's a CDTi, yet it was a 115 from the factory. The dealer did the upgrade three months after the car was bought (I have the receipt and the sticker).