Renault’s lighter, faster Mégane R.S. Trophy-R

The new Renault Mégane R.S. Trophy-R benefits from a truly remarkable weight reduction of 130kg, when configured with its lightest equipment and compared to the standard Trophy version without options. As a result, it tips the scales at just 1306kg, representing a power to weight ratio of 169kW/per ton compared to 153kW/per ton for the Trophy, despite both sharing the same impressive 221kW turbocharged 1.8-litre engine.

As a result, the 0-100km/h sprint now takes just 5.4 seconds – a full three-tenths faster than the Trophy.

The exterior and mechanicals of the Mégane R.S. Trophy-R benefit from the following enhancements, among others:

Carbon composite bonnet: at 8kg this panel is half the weight of the standard car’s steel item.

Carbon rear diffuser: not only lighter than the standard unit, it also helps generate extra aerodynamic downforce.

Wheels: the design of the Fuji Light 19-inch alloy wheel (optional on the Trophy) creates a weight saving of 2kg per corner, while the optional Carbon Revolution carbon wheel slices a further 2kg per wheel and is a world-first in this sector.

Akrapovič titanium exhaust: not only does this contribute to a weight saving of over 6kg, it also delivers a more authentic sound.

Bespoke lighter rear axle: this unit brings a significant 32kg saving over the Trophy, which is largely down to the decision not to use 4CONTROL steering for Mégane R.S. Trophy-R.

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Massive weight saving

The inside of the Mégane R.S. Trophy-R hasn’t escaped the engineers’ forensic pursuit of weight-saving. Almost the entire interior has been reworked in an effort to minimise mass and increase performance, with the following changes:

Monocoque racing seats: Finished in grippy and hard-wearing Alcantara® these figure-hugging one-piece seats offer a weight saving of approximately 7kg per seat. Both seats can be set at three different heights using the lightweight subframe, while a Sabelt six-point harness is available as an accessory.

Removal of rear seats: By ditching the rear bench an impressive 25.3kg has been stripped from the kerb weight. Despite this, the rear doors and the tailgate remain operational. Furthermore, there is a thinner boot floor that saves 1.3kg and is marked with an R logo.

Reworked windows: the front and rear side windows get thinner and lighter glazing, saving 1kg, while the rear doors get fixed glass panes, which allows the removal of the electric window mechanisms and motors. In a similar vein, the rear wiper, its motor and wiring loom have been deleted, resulting in a 3kg saving.

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Engine and gearbox

Given the high specific power rating already achieved by the Mégane R.S. Trophy’s engine (it delivers an extremely impressive 122kW per litre), Renault Sport concluded that it had more than enough performance for the lighter and even more focused Mégane R.S. Trophy-R.

The 1.8-litre direct injection turbocharged four-cylinder engine develops 221kW at 6 000rpm and delivers a muscular 400Nm of torque. Its turbocharger makes use of technology originating directly from Formula 1.

Renault Sport engineers chose the six-speed manual gearbox for the Mégane R.S. Trophy-R, as it is lighter than the dual-clutch EDC transmission, plus it is more in keeping with the car’s focus on expert drivers.

In combination with the significant weight-savings, the Mégane R.S. Trophy-R’s performance reads as follow:

Max speed: 262km/h
Acceleration 0-100km/h: 5.4 seconds
Acceleration 50-120km/h in 3rd gear: 2.9 seconds
Standing km: 24.5 seconds

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