Prince Harry sells car for family model?

Britain's Prince Harry has put his high-powered estate car up for sale, prompting speculation he may be in the market for a bigger family vehicle.

The Duke of Sussex was pictured driving the Audi RS6 Avant to Pippa Middleton's evening wedding reception in May last year with his then girlfriend Meghan.

Now the couple are married the sale of the car may hint at the duke and duchess making plans to start a family.

The luxury estate was acquired by car dealership Overton Prestige which has listed it online for sale with magazine Auto Trader as having one owner, with just 4464 (7184 km) on the clock and priced at PS71,900 ($A127,458).

Erin Baker, Auto Trader's editorial director, said: "This is a smashing car perfectly suited to any aspiring royal.

"The car boasts low mileage, so it begs the questions why is the prince selling so soon? Maybe he's on the market for a bigger family car?"