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Premium Member
12,086 Posts
Discussion Starter · #1 ·

Firstly. These are based on my experience.

The V5 Document

DVLA website link

The DVLA state on their site that you will need written evidence of any changes to engine number and cylinder capacity (cc).

Written evidence can be:

* a receipt for the replacement engine
* written evidence from the manufacturer
* an inspection report provided for insurance purposes
* written confirmation on headed paper from a garage if the change in engine size took place before you bought the vehicle

What the DVLA are basically looking for is confirmation of the engine number and size in case the engine has came from a stolen car and had the engine number altered.

The easiest option for me, from those above, was to get written evidence from Vauxhall since I bought the engine 2nd hand.

How did I get the written confirmation? I contacted Vauxhall customer services directly on 0845 0902044

I just called them up, explained that I had changed the engine in the Corsa and that the DVLA were looking for me to get a letter on Vauxhall headed paper confirming the engine number, size in cc and fuel type.

The lady that I spoke to couldn't have been more helpful. I wasn't charged a penny.

Once you have done that send away your V5 with the new engine number and engine size details along with the Vauxhall letter and a covering letter.

The DVLA didn't request any form of check to be done on my car but you never know.

If anyone has any questions please post them here rather than sending a PM. Thanks.

Thanks to Dave Dempsey for the tips too.

280 Posts
what do you do if you replace say a c20xe with a c20let? in theory its just a modified lump?

As the engine size is the same all you have to do is fill out the v5 with the new engine number and send it off to dvla
so if you replace a non turbo engine with a turbo'd engine do you not have to tell them about the turbo? or will they be able to tell by the engine number?

also, how would you do this if you converted the engine yourself?

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