Porsche 911 GT3 (992) Review 2023 | Top Gear
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Sunday 10th December
It’s more apparent than ever that the 911 GT3 is part of a famous motorsport bloodline. Another phenomenal car

Good stuff

Epic engine, razor-sharp handling, searing performance, chassis balance and communication

Bad stuff

It’s a marginally less comfortable car than its predecessor, getting hold of one


What is it?

Isn’t ‘the 911 GT3’ the answer to that question? Every generation since the first iteration appeared in 1999 has been the answer, unless you happen to be one of those strange people who disavows the 911. Yes, it’s a bit predictable, but it’s not the Porsche 911’s fault that it’s the world’s best sports car. Marinaded in Porsche’s monumental motorsport genius, the GT3 is traditionally the sweetest of sweet spots and equally devastating on road and track.

For the first time since ’99, however, the new GT3 is arriving into unusually hostile territory. The optics on this sort of selfish, highly engineered hedonism aren’t as forgiving as they used to be. Then there’s the challenge from within, in the shape of the latest Turbo S whose phenomenal pace is now more nuanced than ever. And what about the Taycan, the Porsche that is electrifying in more ways than one?

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Has Porsche persevered with natural aspiration?

The game’s not up yet. Porsche is clearly prepared to go to astonishing lengths to keep the hardcore faithful happy. The engine is a naturally aspirated 4.0-litre, has little in common with the unit found elsewhere in the 992 range and a lot to do with the one used in Porsche’s GT3 Cup racing car. Power is up from the last gen car – but only a modest 10bhp to 503bhp, torque to 347lb ft. That’s ample. It’ll accelerate to 62mph in 3.4 seconds, and onto a top speed of 198mph. Also ample.

The engine is constructed on the same production line as the competition unit, features six individual throttle butterfly valves, and there’s a new stainless exhaust system. In other words, this is a 911 variant with its own bespoke power unit, that deliberately eschews the technology used by its siblings, presumably because that’s what 911 GT3 customers prefer. No forced induction. 

What about the gearbox? Can you still have a manual?

You can. There’s a choice of six-speed manual or seven-speed PDK, the manual proving more popular in the US for some reason than the dual-clutch automatic (it’s 50/50 in the UK). The PDK is 20kg lighter than the one used elsewhere because it has one less ratio, and offers torque vectoring via an electronically controlled diff lock. The manual has a mechanical rear diff lock, and the hardware gives it a weight advantage over the bulkier PDK of some 16.8kg.

How’s the diet gone elsewhere?

Weight-saving is one of the obsessions that makes this car what it is. Some examples: the carbon fibre roof is 1kg lighter than the regular steel one, the full bucket carbon seats are 15kg lighter than the standard four-way sports seats. Stripping out some of the 992’s sound deadening material loses another 1.9kg, and if you pony up for the ceramic brakes (£6,498) you’ll save another 17.7kg. This methodology informs every aspect of the car, and ensures that the GT3 with PDK weighs 1,435kg, only 5kg more than the outgoing car (despite the addition of a gas particulate filter and other regulatory gubbins).

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And all this makes the 911 the envy of the world, right?

Ask any car designer to name the rival product they most admire and they’ll cite the 911. The 992 GT3’s visual makeover is mainly about aerodynamics, most of it borrowed from motorsport. This car’s surfaces, especially the bits you can’t see, are very busy hustling air. There’s a four-stage adjustable splitter at the front, a complex fully panelled underbody, a juicy-looking rear diffuser, and possibly the most elaborate rear wing ever seen on a road-legal Porsche (well, until the GT3 RS came along). It sits on a four-way manually adjustable so-called ‘swan neck’ which improves air flow across the underside of the wing.

The upshot is a car whose numbers make the old GT3 look about as aerodynamically sharp as a brick outhouse; at 124mph, with the wing in performance aero setting, it generates 385kg of downforce (an improvement of 150 per cent on the previous car). Its front track width has grown by 48mm, and overall the 911 GT3 is now in mortal danger of losing the wieldiness that is one of its key attributes. Don’t let it get any bigger, Porsche.

What’s it like on the road?

We’ll go into proper detail on the dynamics in the Driving tab, but it’s worth knowing from the outset that for the 992-generation, the GT3 has got a more hardcore edge than the 991. That was a car you could envisage using everyday. The 992 is a slightly firmer machine. You’re always aware you’re driving something that would rather be tearing around. It is unbelievably good at that. However, the cabin quality and fixtures give the GT3 great habitability – plus there’s a wide range of options that allow you to configure the car to make it more Touring focused.

Hang on, isn’t there a touring version?

There is. It’s a commonly held misconception that the Touring is a backed off GT3, fitted with softer springs, dampers and a more forgiving set-up. It’s not. This is a cosmetic package. The big wing goes, and in its place comes the pop-up spoiler from the regular 911, plus a unique engine cover. The exterior brightwork is literally that – aluminium as standard rather than black – and inside leather is standard rather than Race-Tex.

Obviously, you can shift all this around on the configurator, get your Touring as tight and tied down as you desire, or alternatively load it up with Matrix LED lights (£2,054), rear camera (£876) and BOSE surround sound (£1,002) so the characteristics fit the name a bit better. Again, you can choose manual or auto – there’s no cash penalty either way.

While we’re on the subject, what does it cost?

£135,700. The same for both Touring and GT3. Some other numbers you might be interested in: Porsche claims 21.7mpg, but on road you’ll better that quite easily (23-25mpg). CO2 stands at 294g/km. And as you’re probably aware, the 911 is no longer a small, dainty car, it’s 4.57m long by 1.85m wide.

What's the verdict?

In a world that has looked very far from certain recently, it’s a relief to know the 911 GT3 is as sensationally good as ever

Inevitably, you start pondering where this car fits in the great Porsche scheme of things, whether anything will get close to the 997 GT3 RS 4.0 or maybe the 911 R (or frankly whichever track-oriented 911 most does it for you).

On the other hand, as the car world pivots inexorably towards full digitalisation, electrification and, heaven help us, autonomy, anything powered by a naturally aspirated engine and available with a manual gearbox isn’t just raging against the dying of the light, it’s practically walking on water.

In a world that has looked and felt very far from certain in recent years, it’s a relief to know that our performance car lodestar is as sensationally good as ever. The 911 GT3 is a car so addictive you want to get straight back into it a moment after stepping out of it. Unputdownable.

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