In 2009, the Pontiac lineup offered a G5 that is mechanically similar to the Chevrolet Cobalt. The G5 Base has a 148 hp 2.2 liter Ecotec engine, while the GT has a sport-tuned suspension and a 173 hp 2.4 liter engine with variable valve timing. The G6 has side curtain airbags standard on all Coupe and Sedan models. A new 3.6 liter V6 engine with variable valve timing is standard on the GTP coupe and sedan, and a handful of new paint choices are available. The GTO had been discontinued in 2007. The new Solstice GXP model gets powered by a 260 horsepower two-liter engine with direct fuel injection, variable valve timing and a turbocharger. The GXP also gets sportier suspension tuning, StabiliTrak, and styling enhancements.