Australia-based Holden is sadly shutting its doors this October, which means fabled cars like the Commodore are being unceremoniously killed off. In the UK, the Commodore was adapted into the formidable Vauxhall VXR8, much to the envy of America. Compared to its Chevrolet SS cousin, the 6.2-liter V8 powering the VXR8 produces a pulse-pounding 577 horsepower. After the PSA took over Vauxhall, there were hopes that the VXR8 would live on, but it will suffer the same fate as the Commodore.

Don't think, however, that Vauxhall is letting the VXR8 bow out without a bang. To give the sports sedan a tire-shredding send-off, Vauxhall has announced one final limited-edition model – and it's the most vicious Vauxhall the company has ever made. Set to debut at this year's Goodwood Festival of Speed later this month, the Vauxhall VXR8 GTS-R is powered by an evolution of the current GTS's supercharged 6.2-litre V8 engine delivering a whopping 586 horsepower and 545 lb-ft of torque. That makes it the most powerful car ever made in Vauxhall's 114-year history. The exterior has been spruced up to give the GTS-R a sportier appearance, featuring a new front fascia, splitter, wings and carbon fiber vents.

Further distinguishing the GTS-R is a bespoke diffuser, carbon fiber spoiler, new 20-inch forged alloy rims and quad exhaust outlets with diamond-shaped exhaust tips. The diamond theme continues in the cabin, which has been adorned with Alcantara and leather seat trim. An Alcantara trim has also been applied to the steering wheel and gear-lever. To handle such monstrous power, the brakes have been upgraded with six-piston, monoblock calipers and 410-mm discs up front. Power is sent to the rear wheels via a limited slip differential, and the GTS-R retains the advanced torque vectoring system as the previous GTS.

Not only is this the most powerful Vauxhall ever made, it's also one of the most exclusive – only 15 are being made for a hefty asking price of 74,500 GBP ($96,008). The GTS-R is not the most powerful Commodore ever made, however. That moniker belongs to the limited-edition Holden Commodore GTS-R W1 which is powered by the Corvette ZR1's 635-hp V8.