Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

2015 Porsche 911 Carrera GTS revealed – but not in Paris. Costs from £91,098

The new 2015 Porsche 911 Carrera 4 GTS (pictured) now on sale We had assumed that the lack of an appearance at the Paris Motor Show for the new Porsche 911 Carrera GTS meant Porsche had decided to leave the official reveal until later in the year. But here it is, and it’s going straight on sale. Having waited almost until the end of the 997’s life before launching a 911 GTS, this latest GTS is arriving much earlier in the 991’s lifecycle than you’d expect.

New (2013) Skoda Octavia Estate: Price from £16,790

The new Skoda Octavia Estate has had its official debut at the 2013 Geneva Motor Show, and Skoda has revealed it will cost from £16,790 The new Octavia Estate gets a choice of four engine options – two petrol and two diesel – with the 1.2 TSI 105PS, 1.4 TSI 140PS, 1.6 TDI CR 105 PS and 2.0 TDI CR 150PS offering a decent set of everyday choices all of which come with a standar manual ‘box, although you can spec the diesel engines with a DSG ‘box. Trim levels mimic those of the Octavia hatch, with S, SE and Elegance. The Octavia S Estate comes with 16″ alloys, Bluetooth, DAB, electric front windows, Climate, Stop-Start and Touchscreen.

London's GPS-based speed-limit trial puts Big Brother's foot on the gas pedal

A fleet of 12 Toyota Priuses in London have been fitted with GPS-linked speed limiters to measure how drivers respond to having their speed controlled by a computer rather than their own feet. For now, the trial is local to London, run by Transport for London, the agency that manages the city's roads, buses, subways and trains. The agency is using its own fleet of Priuses for the test and will add a bus and a taxi later this year.