2015 Vauxhall VXR8 GTS automatic review

What is it?

It’s an automatic version of Vauxhall’s much-admired, grin-inducing supercharged saloon, the VXR8 GTS.

We’ve always had plenty of time for the GTS, in part thanks to the fact that on the scale of bang-for-buck it represents something of a limited nuclear exchange for a few cents.

Key to its appeal is its supercharged 6.2-litre ‘LSA’ V8. Thanks to a four-lobe, twin-rotor Eaton supercharger, which crams nine pounds of boost into the all-aluminium V8, peak power is rated at a hefty 577bhp. Likewise, torque is an equally impressive 546lb ft. 

Compared to the similarly priced four-star Mercedes-AMG C63, it outmuscles its twin-turbocharged German alternative by 108bhp and 67lb ft. Not the be-all and end-all, by any stretch, but nevertheless impressive - and that’s before you start taking into account the myriad, affordable and almost limitless tuning options for the LS range of engines.

As standard, the rear-wheel-drive GTS comes with a stout six-speed Tremec TR-6060 manual gearbox. Those in the market for an automatic, however, can opt for a version that replaces the Tremec and its associated twin-plate clutch with a heavy-duty GM-sourced 6L90E automatic gearbox.

This traditional torque convertor-equipped transmission commands a £1725 premium over the manual version, but it does also come with wheel-mounted paddle shifters for easily commanded manual shifts.

Durability hasn’t been overlooked either, as - like the manual version - a transmission cooler is also included. This should help keep the gearbox's fluid temperatures at sensible levels and prolong the life of both the fluid and the transmission.

What's it like?

The manual VXR8's Tremec gearbox wasn’t the slickest unit around but it was accurately gated and easy to use. Missed or incorrect shifts were rare as a result while factory-fit launch control made standing starts a doddle. 

Consequently, opting for a conventional torque convertor-based automatic feels somewhat of a retrograde choice. It's a good transmission, make no mistake, but its softer, tardier delivery and automated nature predictably detracts from the GTS' core driver appeal.

If you dropped from fifth to third in the manual and pinned the throttle, you could indulge in the sensation of the Vauxhall's tail squirming as the boost built; the engine would bellow, the LSD would frantically attempt to meter out the torque between the rapidly spinning Continentals, and a gratifying surge of acceleration would ensue.

Attempt the same in the automatic and you'll find that the whole experience dulled a little, because the transmission softens the power delivery. Also, in some cases, the necessity for a kickdown leads to a noticeable delay in acceleration. Once you've got the Vauxhall rolling in gear, however, the transmission feels suitably direct.

The automatic does have other appealing facets. In manual mode, it won't shift up automatically when you hit the limiter while driver-commanded shifts are carried out quickly. It's also as fast as the manual, on paper, with Vauxhall claiming a 0-60mph time of 4.2sec for both versions, despite the automatic not having launch control. No doubt repeatability on that front would lie in favour of the automatic, once off the line, particularly in inclement conditions.