What with all the talk about dubious methods of increasing fuel-efficiency, I thought Slashdot readers might be interested to know that Volkswagen has announced two new engines that look quite amazing on paper. First up is a 170 horsepower supercharged and turbocharged 1.4 litre petrol engine that is capable of 39 MPG city/48 MPG highway. The other engine is a 170 horsepower 2.0 litre direct-injection turbo diesel that can get 48 MPG (driving type not specified). Both engines will be used in the upcoming Golf GT. The gas engine runs at 2.5 bars of boost on top of a 10:1 compression ratio! Yum!