The Volvo S60 Polestar performance concept made its world premiere on Saturday at the Gothenburg City Race in Sweden. Developed by Volvo Cars Official Motorsports and its racing and tuning partner Polestar for an as of yet unnamed client.

But it's not all lost, for a hope that it will be built for the market, depending on the response that is. The S60 Polestar is motivated by a 3.0 liter turbocharged inline six delivering 300hp, to all four wheels for a zero to 100km/h sprint of 6.1 seconds and a top speed of 250km/h.

But changes to the inline six, which included a modified cylinder head, combustion chambers, inlet manifold and air intake along with a Garret 3171 turbo produces 508hp at 6,500rpm and 575Nm.

The company quotes a 0 to 100km/h (62mph) sprint time of just 3.9 seconds and a top speed in excess of 300km/h (186+mph).

By comparison, the current Mercedes-Benz C63 AMG that is powered by a 451hp (457PS) 6.3-liter V8 hits 100km/h in 4.4 seconds and tops out at 250km/h (155mph - electronically limited).

Robert Dahlgren, Volvo Polestar racing driver, commented after taking the car for a spin:

"To me the Volvo S60 is a very well sorted car from start. In our concept car we have developed chassis, engine and transmission just like we want it, and the result is a huge leap forward in terms of handling and performance. It is, by far, the most impressive street Volvo I’ve ever driven. But I must also say that the genuine Volvo feeling is still there."

Here are some more info on the car:

Technical specification
Performance

0-100 km/h 3.9s
Top speed more than 300km/h
Engine

Volvo T6 inline six (B6304T4)
508 hp @ 6500rpm
575Nm @ 5500rpm
Max rpm: 7100
Modified cylinder head and combustion chambers
Modified inlet manifold and air intake
Special manufactured conrods
Garret 3171 turbo
Ferrita 3.5” stainless steel exhaust system
Drive train

Reinforced M66C (close ratio) manual 6-speed gear box.
Haldex E-LSD in rear
Haldex Gen4 XWD
Chassis

Tires 265/30R19
Rims Polestar 9,5X19”
Chassis lowered 30mm
Öhlins 3- way shock absorbers
Reinforced anti-roll bar front and rear
Track width increased 20 mm front and 40 mm rear
Polestar-tuned EHPAS steering
Stabilising X- members, front and rear.
Modified control-arms with uniballs front and rear.
Reinforced bushings in sub-frame and control-arms
Modified engine mounts
Weight

Total weight 1640kg and optimized weight distribution
Brakes

Front Polestar-Brembo 6 piston calipers, 380 mm ventilated discs
Rear Polestar-Volvo calipers, 302 mm ventilated discs
Brake cooling air intakes from front
Aerodynamics

Based on tests in Volvo’s wind-tunnel
Lowered front splitter and larger rear spoiler to reduce high speed lift
Carbon fiber diffusor
Body 20 mm widened front and rear