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

Diesel joins Porsche Panamera lineup

Porsche has put forward some eye-catching fuel-economy figures for the Panamera diesel--although we may never see the car in the United States. Set to go on sale across Europe in August, the four-door is claimed to return a combined city/highway driving fuel economy of 36.2 mpg in standard guise under European testing procedures. When fitted with optional low-rolling-resistance tires, the fuel economy climbs to 37.3 mpg on the European test--a figure that gives the Panamera diesel a theoretical range of 800 miles on its 21-gallon fuel tank.

Fiat 500 Turbo arrives for the US

The Fiat 500 Turbo has made its debut at Concorso Italiano in Monterey, California, effectively a US version of the Abarth 500. Last month we had a spot of the Fiat 500 Turbo in a commercial Fiat had shot for the 500 range, and it’s made its official debut this weekend at the Concorso Italiano in Monterey, California. The Fiat 500 T is really what we think of as the Abarth 500, a pimped 500 with 135bhp and some aggressive body changes, designed to sit below the Fiat 500 Abarth in the States.

One Lap of the Web: a lap of the 'Ring, a lap of the YouTubes and a lap of the eBays

-- The Porsche 918 achieved a spectacular and borderline-unbelievable time just a few days ago, but here are some less heroic cars lapping the 'Ring, like Peugeot 205s, modern BMWs and a few bikes mixed in for good measure. Check out the classic Heckflosse (fintail) Mercedes-Benz at 2:05. -- Filmmaker Casey Neistat filmed, umm, a pretty good commercial for the new Mercedes-Benz CLA, but it's the making-of video that's even more fun to watch.