
The relaunch is tied to its September issue, on sale on 29 July. The magazine will offer a new 40-page A-Z which rates and pictures every car currently on sale in the UK.
What Car? claims to be "the UK’s biggest car-buying advice brand", with over 1.5 million consumers consulting it each month.
It currently comprises What Car? magazine, the website whatcar.com and brand extensions such as the What Car? Driving School. Whatcar.com also hosts the female-focused car buyer's site, evecars.com.
Haymarket has invested heavily in the redesign and promotion of What Car?, including sampling initiatives with The Telegraph and with other Haymarket titles as well subscription offers and online promotions.
Steve Fowler, editor-in-chief said, "We have made huge investments in the magazine by improving what we do best and what we are famous for – helping the nation buy better.
"This redesign is a commitment to ensuring the quality of the product and to maintain our strength in print as a 'pillar' brand on newsstands".
Andrew Golby, publishing director said: "Our investment in the title comes at a time when the UK new car market is recovering strongly.
"We hope to play our part in maintaining that growth."
In the last set of magazine ABCs, for July – December 2009, What Car?'s circulation had fallen 9.8% year on year to 83,102 copies.