Accelerate all you want, chances are that, unless you own an exotic, you’ll never see this Audi RS3 Sportback in your rearview mirror for more than a couple of seconds. The reason is that it has an HGP-Turbo diploma and more power than an R8.

The 2.5-liter turbocharged five-cylinder engine has been massively upgraded with new components by the German tuner and now puts out a mighty 606 PS (597 hp / 446 kW) and 710 Nm (524 lb-ft) of torque. To cope with the extra 206 PS (203 hp / 154 kW) and 230 Nm (170 lb-ft) of torque, the 7-speed DCT has been enhanced.

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HGP-Turbo claims that the RS3 Sportback is now capable of shooting to 100 km/h (62 mph) in 3.1 seconds and to 200 km/h (124 mph) in 9.7 seconds. The quarter mile is completed in 11.01 seconds and, if the road conditions allow it, it will push up to well over 300 km/h (186 mph).

In fact, the speedometer indicated a whopping 316 km/h (196 mph) during a recent run on a German motorway – we assume on a speed-limit free section of the Autobahn. It may not be the most precise way to measure a car’s top speed, but it’s more than the stock model does: 250 km/h (155 mph) or, with Audi removing the speed limiter, 280 km/h (174 mph).

All work is TUV-approved, and will cost you €16,900 ($18,917) in Germany, including the €1,400 ($1,567) for the installation of all parts. That’s about €3,000 ($3,358) less than the starting price of the new A1 Sportback locally, but in return, you’d get supercar levels of power in what is, essentially, a compact hatchback.