Street Max - Sm11226 4"x9" Oval Body Muffler 2.5" Offset In / 2.5" Center Out on 2040-parts.com

Engineers wring 30 mpg on the highway from the 2011 Ford Mustang V6

First Ford got us excited by making some major engine upgrades to the Mustang for 2011--a 305-hp, 3.7-liter V6 and a 412-hp, 5.0-liter V8. Now it's wooing us with fuel economy, too. Ford says the V6-powered Mustang has been certified by the EPA to deliver 30-31 mpg on the highway (depending on the transmission) and 19 mpg in the city.

McLaren 650S priced from £195,250 and does 0-62mph in 3.0 seconds

The new McLaren 650S (pictured) costs from £195,250 It’s only ten days since the McLaren 650S was revealed as a more hardcore version of McLaren 12C supercar – and with more than a hint of P1 styling – but McLaren are already building it and have revealed performance and price details. Available as either a 650S Coupe or 650S Spider, the starting point is £195,250 for the Coupe and £212,250 for the Spider, that’s almost £20k more for the 650S Coupe than the 12C Coupe and £17k more for the Spider. But apart from the more dramatic styling, increased downforce and tweaks from the extra power – the 650S gets 641bhp – to the improved handling and dynamics, you also get increased levels of optional equipment including carbon racing seats from the P1, rear parking camera and full carbon fibre interior.

Mercedes SLS AMG E-Cell (2010): the electric SLS

Following the unveiling of Tesla's updated Roadster 2.5, Mercedes is showing off its iteration of an all-electric sports car: the SLS AMG E-Cell. While the regular SLS pumps out 563bhp and 479lb ft from its 6.2-litre V8, the SLS E-Cell has four synchronous electric motors, powering all four wheels for a combined output of 392kW (equivalent to 526bhp) and a mammoth 649lb ft of torque. Crucially, all of that power is accessible from zero revs, allowing the E-Cell to sprint to 62mph in four seconds dead.