Carmakers copyright repairs or changes

[Niall]

I would imagine if the DVLA have used the term "extensively modified" then its basically testers discresion. If its a chavvy Corsa with a air filter and different wheels but the ABS doesn't work, thats not extensively modified. If however its something with no interior, changed suspension, engine modifications etc the i reckon you could class that as extensively modified as there is no law against doing those things however the owner may use the car for track days as well as a daily