Weighing in at 605kg including driver and camera, the TF109 is 4636mm long, 1800mm wide and 950mm high. The body is a moulded monocoque of carbon fibre and honeycomb construction. Suspension consists of a carbon-fibre, double-wishbone arrangement, with carbon-fibre trackrod and pushrod. The BBS forged magnesium wheels combined with Bridgestone Potenza tyres.

The TF109 uses Toyota and Magneti Marelli control systems plus a McLaren Electronics Systems ECU, as required by FIA rules. A 2,398cc 8-cylinder engine generates around 740bhp with maximum 19,000rpm, (mandated by the FIA) to drive a 7--speed transmission. Fuel and lubricants are by Esso.

The visual differences are significant, particularly the front and rear wings. At 1800mm, front wings are wider and 75mm lower while rear wings are 75% narrower at 750mm. As well as reducing downforce and speeds, these changes aim to increase a driver's chance to overtake the car in front.
Such a transition gave Panasonic Toyota Racing engineers a clean sheet of paper for the TF109 design, with relatively few concepts carried over from previous cars. Using proven Toyota Way principles, the challenge has been addressed methodically and enthusiastically

Another change this year sees the return of Bridgestone Potenza slick tyres after a 12-year absence, increasing grip levels and potentially making overtaking easier.

But it was not only the chassis department who had to adapt to new regulations, with significant modifications in engine rules for 2009 as well.
Engine life has been extended from two to at least three Grand Prix weekends, excluding Friday practice, incorporating a limit of eight engines per driver during the racing season.
As part of this cost-saving measure, and to assist with reliability, engines will be limited to 18,000rpm; down by 1,000rpm on 2008.
So, heading into a fascinating Formula 1 season, Panasonic Toyota Racing is completely committed to success on and off the track.