The company believes Prince Charles, who is frequently chauffeured in large gas guzzling executive saloons, would dramatically reduce his carbon dioxide emissions if he were to opt for a new Civic Hybrid which is congestion charge exempt, produces just 109 g/km of CO2 and returns a combined 61.4mpg.
"The Honda Hybrid technology is easy to use and creates a win win for the driver and the environment. Prince Charles could save his fuel bills as well as the planet," said Simon Thompson, Honda's head of marketing.
The New Civic Hybrid (IMA) goes on sale in January 2006.
A representative in the Prince of Wales’ Household Office, thanked Honda for its offer.
Prince Charles told the BBC this week climate change should be seen as the "greatest challenge to face man" and treated as a much bigger priority in the UK.