I know what you’re going to say: “Who is buying an Audi TT RS only to drive it economically?” Probably nobody, but these two YouTubers from the channel NEWTONMETER wanted to find out how much gasoline the turbocharged inline-five engine sips when the car is driven as fuel efficient as humanely possible. The first order of business was to adjust the tire pressure and make sure it’s optimal for the hypermiling adventure they were about to embark on.
Step two was to fill up the tank to the brim using premium fuel. According to Audi’s data sheet, the TT RS Coupe’s fuel tank can swallow 55 liters (14.5 gallons). The same technical specifications reveal the high-performance coupe has a fuel consumption of 6.5 liters / 100 km (36.2 miles per gallon) when driven outside of the city. Doing the math, it means the car should be able to cover approximately 850 kilometers (528 miles) before running out of fuel.
As it turns out, they were able to beat the numbers listed by Audi as in the end they managed to travel for 1,037.3 kilometers (644.5 miles) by averaging a remarkable 5.3 liters / 100 km (44.4 mpg). The journey took 13 hours and seven minutes and the car wasn’t driven too slowly considering the Audi Virtual Cockpit shows an average speed of 79 km/h (49 mph).
Taking into account they managed to reach the gas station, it means there was still some fuel left in the tank, therefore the range was actually slightly higher. With just one person inside the cabin and no luggage to carry around, the car would’ve been lighter, and thus the 2.5 TFSI engine would have needed even less fuel.
As impressive as is squeezing more than a thousand kilometers from the TT RS’s fuel tank, hypermiling is always exhausting. Having to constantly be super careful with acceleration is tiring, but these guys did it with great success.