Mercedes and McLaren haven’t stopped work on the SLR – as these spy shots show, they are aiming to unveil a more powerful version for the Paris show in September.
The new version will have an extra 24bhp from the supercharged 5.4-litre V8. Together with the improvements to the SLR’s transmission, the dash to 60mph will now apparently take 3.6sec, a reduction of 0.2sec, and 0-124mph will now take 10.2sec instead of 10.6sec.
That makes the hotter SLR faster than both the Porsche Carrera GT and the Lamborghini Murciélago.
The exterior has received styling tweaks designed to improve high-speed stability and smooth airflow under the car’s long body. Inside, the SLR has had a dose of extra carbonfibre as part of a weight-saving programme, which has reportedly saved 40kg.
Sources have told Autocar that just 150 hotter SLRs will be built before attention is turned to an open-top version of the McLaren-built car, scheduled for launch at next year’s Geneva show.