The advertising watchdog has slammed Lexus for a poster and national press advert for its  RX400h.

The ad had the headline “put your carbon footprint down” and stated: “The Lexus RX400h is a luxury car with a conscience. A luxury car that’s better for the environment but without the compromise, thanks to our unique Lexus Hybrid Drive Technology… so if you want to make a stand for the planet, but arrive in style, find out more by visiting your local Lexus centre.” The small print stated “RX400h.. CO2 emissions 192 g/km”.

There were a number of complaints upheld by the watchdog which included whether the ad was misleading because it suggested the vehicle was better for the environment than was the case, and whether it was irresponsible because it might encourage or condone speeding.

The Advertising Standards Authority (ASA) did not uphold a grievance that the poster suggested people should ignore concerns about carbon emissions.

ASA noted that consumers would understand a hybrid car to be better for the environment than a standard engine and was therefore a pro-green message.