AUSTRALIA'S top selling mid-sized car, the Mazda6, arrives with a midlife makeover this week.

Cosmetic changes include a more prominent grille and bumper, new headlights and tail-lights and fresh alloy wheel designs.

Joining the ranks of the Mazda6 sedan, hatch and wagon will be a top-of-the-range Touring wagon.

Engines remain unchanged: the 2.5-litre petrol is available in all three body styles, while the 2.2-litre diesel comes in the hatch and wagon.

The upgrade will come with minor steering and suspension changes.

Prices will be announced this week.