General Motors UK Ltd t/a Vauxhall (Vauxhall) responded that the Ampera was a unique type of car because it could be driven electrically for 360 miles. They explained that it was capable of travelling up to 50 miles on a fully charged battery, and that beyond that point the Ampera's "range extender" mode took over. In this mode the internal combustion engine acted as an on-board generator for the electric motor and would take the car the remaining distance using electricity generated from the petrol in its fuel tank. They stated that the claim that the Ampera had a 360-mile range was in fact conservative and significantly understated the range achieved in vehicle tests in order to allow for "real world" driving styles.

Vauxhall said they went to great lengths in all their advertising to communicate the unique selling point of the Ampera, the petrol engine which worked as a generator, which gave drivers the confidence to travel distances normally only associated with traditional or hybrid cars. They stated that they had explained how the Ampera worked in the on-screen text "Comparison based on electric vehicles and extended range electric vehicles driven electrically at all times, even when an additional power source is generating electricity". They emphasised that they would never intentionally mislead the public but that the car could travel 360 miles driven by electricity and they believed this was clear from the ad. They nevertheless offered to make changes to the on-screen text if this was deemed necessary.

Clearcast said they had considered the ad very carefully and had worked with a motoring consultant when assessing the claims it made. The consultant had advised them that it was accurate to claim that the vehicle had a 360-mile range. Clearcast did not believe that the ad was misleading as its focus was to demonstrate the Ampera as a new type of electric vehicle and the on-screen text made clear how it worked.