Mercedes is upgrading the SL with new V6 and V8 engines and revisions to the V12. The SL500 now has a 383bhp 5.5-litre V8 that helps drop the 0-62mph sprint to 5.4sec. The new V6 in the SL350 rustles up 268bhp.
The 992 Porsche 911 GT3 RS with the Manthey Racing kit has finally recorded an official Nürburgring time, and it makes Corvette’s 1250bhp ZR1X look a …