David Lee recently ran multiple 10-sec passes at Santa Pod Raceway in his special Golf R Mk7. Under the hood sits a 2.5 L TFSI inline-five from a 2016 Audi RS3. The engine features an iron-block, CNC ported heads, and a Turbo Engineers TTE625 turbo. It made 622 horsepower (631 PS) and 579 lb-ft (786 Nm) of torque on 27.5 psi (1.9 bar) of boost and 99 RON fuel with booster. Pretty good for a car that averages 43 mpg to and from the track. The car uses the stock seven-speed direct-shift gearbox.
Source: The Turbo Engineers and VeeDubRacing via Autoevolution
“averages 43 mpg to and from the track”
BULLSHIT.
I based that info from this post by The Turbo Engineers FB page.

European MPG ratings are different than in the USA. Not sure how they calculate it, but its always higher.
Quick calculation says it’s about 35 mpg US. Certainly nothing to sneeze at.