Skip advert
Advertisement

McLaren Senna review - the ultimate track driving experience - Engine and Gearbox

McLaren has taken a legendary name and produced what genuinely could become a legendary car

Engine and Gearbox

The M840TR version of McLaren’s V8 has been comprehensively revised over the engine in the 720 S for this, its most powerful iteration yet. Having passed through the roof-mounted snorkel intake, the ingested air then enters a new carbon fibre intake plenum that helps enable an even better throttle response.

Advertisement - Article continues below

New cams and pistons, two instead of one fuel pumps and additional sensors ensure the V8 is capable of its increased outputs, which now stand at 789bhp at 7,250rpm and 590lb ft of torque from 5,500-6,700rpm. The spent gases leave via an inconel and titanium exhaust that exits on the top of the rear deck, with careful management of the airflow to ensure that it does not interrupt the workings of the rear wing. The exhaust is valved for the UK and many other markets, with the lower of the three pipes taking precedence at low revs and loads; in certain markets this additional silencer and pipe is removed, whereupon there are just two pipes exiting in the exhaust surround.

Like all other McLarens, the Senna uses a twin-clutch gearbox with manual control via paddles behind the steering wheel. In Sport mode the ignition is cut for the change of gear, but while it may seem impossible to get a quicker swapping of cogs, in Track and Race settings an ‘Inertia Push’ technology means there is virtually no interruption at all during the gear changing process.

Skip advert
Advertisement
Skip advert
Advertisement

Most Popular

Mercedes-AMG discounting its F1-inspired super saloon by £9500
Mercedes-AMG C63
News

Mercedes-AMG discounting its F1-inspired super saloon by £9500

The Mercedes-AMG C63 S E Performance is, to the surprise of very few, not selling well. So now there are deals to be had…
19 May 2025
Volkswagen XL1 (2013) review – Bugatti-level engineering aimed at MPG not MPH
Volkswagen XL1 – front
Reviews

Volkswagen XL1 (2013) review – Bugatti-level engineering aimed at MPG not MPH

Another hair-brained Piëch passion project, the XL1 is shot through with hypercar engineering, all to an end of saving fuel
16 May 2025
Driving ’80s performance car icons, from the Peugeot 205 GTI to the Ferrari Testarossa – car pictures of the week
evo's ’80s performance car test
Features

Driving ’80s performance car icons, from the Peugeot 205 GTI to the Ferrari Testarossa – car pictures of the week

In the latest issue of evo magazine, we revisit six staple performance cars of the 1980s on some of the best roads in the UK – these are our favourite…
18 May 2025