Formula One constructor and sports car manufacturer, McLaren, claim their newly launched 675LT is the lightest car in its class, and one of the fastest.
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Slotting neatly between the 650S and McLaren P1 super sports car, the 675LT – that’s LT for ‘Longtail’ - tips the scales at just 1230kg, or 100kg less than the 650S, which was already the lightest car in class.

By way of comparison, the superlight Ferrari 458 Speciale has a kerb weight of 1395kg, while the all-new 488 can only manage a scant 1370kg.

Even Porsche’s heavily track-focused 911 GT3 RS, or Lamborghini’s Hurucan can’t match the McLaren on the scales, with their 1495kg and 1422kg mass, respectively.

McLaren 675LT6

On the performance side of things, it’s pretty much the same story. McLaren claim its 3.8-litre twin-turbocharged V8- powered 675LT will sprint from 0-100km/h in a mind-blowing 2.9 seconds – one-tenth quicker than the 650S.

Perhaps even more astonishing is its 0-200km/h performance in 7.9 seconds, or the car’s braking ability when decelerating from 100-0 in just 3.0 seconds.

Only the 6.5-litre V12 powered Lamborghini Aventador can match the McLaren’s standing-start performance.

However, if you speak with McLaren people, they’ll tell you that outright pace is in fact secondary to the 675LT’s performance on the track.

McLaren 675LT9

Executive Director – Product Development at McLaren, Mark Vinnels is quick to confirm that “A good proportion of 650S owners like to drive their cars on tracks and have been asking for a car with more track bias – and the 675LT is exactly that car”.

At least 30 per cent of the 675LT’s overall parts have been modified from the 650S. The engine alone has had over half its parts changed to deliver a sharper driving experience. Parts such as the lightweight turbochargers, titanium-derived internals, new cams and connecting rods have collectively produced even more grunt for quicker lap times.

There’s a new lightweight and much louder titanium exhaust system that also saves 1.1kg.

The engine is mated to the familiar seven-speed dual-clutch transmission, though, for the 675LT, the three drive mode settings (Normal, Sport and Track) have been recalibrated to deliver sharper throttle response and gearshifts up to twice as fast as the previous iteration - 40 milliseconds.

McLaren 675LT8

The McLaren 675LT uses Ignition Cut technology – borrowed from Formula 1. In Track mode, above 5000rpm and from 60 per cent throttle input – not only is the fuel cut between gearshifts, but so too, is the spark on gearshift, for the fastest possible change.

Beyond revisions to the powertrain is a significant focus on aerodynamics. The active airbrake is twice the size as that on the 650S. The carbon fibre front splitter, too, extends further and there are new front wings for even more downforce – 40 per cent more, overall.

The car is 20mm wider and 20mm lower, and there’s a faster steering rack for a more engaged driver experience, particularly on the tarmac.

McLaren 675LT10
Even the tyres are unique to Super series-based 675LT – developed by McLaren in partnership with technical partner Pirelli.

High performance Pirelli P Zero Trofeo R tyres, with offer a stiffer internal structure for six per cent more grip than the P Zero Corsa - are standard fitment on the 675LT.

All 500 examples of the 675LT have been sold. Australian customers will need to have shelled out $616,250 for the privilege.

Check back to read a full review of the car on Tuesday, or check out video footage of the car performing a launch control start on our Facebook page.