F1 legend Schumacher's 2003 winning Ferrari up for auction

The Ferrari in which Formula One legend Michael Schumacher drove to the 2003 World Championship title is set to be auctioned by Sotheby's on Wednesday.

The F2003-GA, Chassis 229 is estimated to fetch between $7.6 and $9.6 million when it goes on offer during the Sotheby's Luxury Week of sales in Geneva.

It is "one of the most significant Formula One cars of all time", the auctioneers said.

Schumacher raced nine times in the car, winning five Grands Prix in the 2003 season and driving it when he clinched the title in Japan.

"It's one of the Ferraris with the most victories in the constructor's history, so it's a very important car in the history of motor racing," Vincent Luzuy, from the Sotheby's branch dealing with luxury car sales, told AFP.

Designed by Rory Byrne and Ross Brawn, the F2003-GA featured a longer wheelbase to improve aerodynamics, he explained.

It was brought in at the Spanish Grand Prix, the fifth race of the 2003 season. Chassis 229 is by far the most successful of the six F2003-GAs that were built.

Schumacher drove it to victory in Spain and also won the Austrian, Canadian, Italian and US Grands Prix in the car.

He also claimed pole position in Spain, Austria and Italy in the car, and the fastest laps in Austria, Italy and the United States.

The car powered Schumacher to his sixth F1 title -- a total that saw the German overtake the five won by Argentina's Juan Manuel Fangio in the 1950s.

It also helped Ferrari win a 13th constructor's championship -- the Italian team's fifth in a row.

"It's a real pleasure driving it," Schumacher's F1 driver son Mick said after giving the car a run around Ferrari's Fiorano Circuit.

"It's when the cars were sounding the nicest, driving the nicest," he said, citing the three-litre V-10 engine.

Luzuy said such F1 cars were rare on the market.