Toyota Vitz 2005 F Exhaust Muffler [4022200] on 2040-parts.com

State Farm releases Driver Feedback app

Accelerometers aren't just for the autocross geeks who want to see whether they threw more than 1.0 lateral g's on their last apex. These gadgets have made their way to the iPhone. State Farm is releasing its Driver Feedback app, which uses the iPhone's high-tech guts (accelerometer, gyroscope and digital compass) to measure driving habits such as smoothness or aggressiveness during acceleration, frequency and abruptness of braking and how hard you take corners (ahem, BMW owners).

2013 Porsche 911 GT3 (991) arrives UPDATED & OFFICIAL

We have the first photos of the 2013 Porsche 911 GT (991) ahead of its reveal this week at the 2013 Geneva Motor Show. Update: Porsche has now caught up with the first photos arriving and we have official details of what the new 911 GT3 has to offer. A rise in weight from the last GT3 sees the new GT3 weighing in at 1430kg, but power is up to 468bhp and 324lb/ft of torque from a tweaked version of the 3.8 litre flat 6 which now revs to 9000rpm with power going to the back wheels through the auto ‘box.

2014 Porsche Macan video review

The all-new Porsche Macan is likely to become the brand's best-selling model. The compact SUV is a rival for cars such as the Audi Q5, BMW X3 and Range Rover Evoque and MSN Cars got behind the wheel to test the Macan's abilities on the road, off-road and on a test track. The Macan is Porsche's second SUV - it's a baby brother to the larger Cayenne and goes on sale in April, with prices starting from £43,300.