The Porsche 918 Spyder gets tested once again on the race track. We're talking about a high-performance Porsche here, so nobody doubts its track credentials. However, the 918 Spyder is not all about power, speed and performance. Porsche claims that the 918 Spyder is able to offer a fuel consumption of 85 to 94 mpg (3.3–3.0 litres/100 km) . We'd really like to see this claim being put to the test.