The inline six-cylinder engine received a power upgrade of and to at 6000 rpm/ at 3250 rpm. The turbocharged engine used in the XR6 Turbo and G6E Turbo models produces ( and ). The power output of is similar to previous FPV turbos, but it is a substantially modified design: the new induction system which includes a bigger and more efficient intercooler, higher compression ratio, extra boost and strengthened internals are the key changes. The XT, G6 and G6E also have an E-Gas (LPG) option. The engine continues to use a similar VCT system as its BA/BF predecessors. Fuel consumption has been improved over the outgoing model. The XR6 Turbo received "Motor" magazine's "Bang for your Buck" 2008 award.