The 2011 Chevy Aveo is offered in two body styles: a 4-door sedan and a 5-door hatchback known as the Aveo5. Both styles are available in three trims: the base LS, the mid-range LT1 and well-equipped LT2. Just as in 2010, the 2011 Aveo comes with a 1.6L Ecotec DOHC 4-cylinder engine with variable valve timing, which helps it make 108 horsepower and 105 pound-feet of torque. It is mated to a standard 5-speed manual gearbox, while an optional 4-speed automatic transmission is available on the LT trims. The automatic transmission features a hold-control mode to hold a higher gear and to aid traction on slippery roads. All trims are front wheel drive. All Aveos utilize a MacPherson strut front suspension with coil beams and a stabilizer bar and a compound-link independent suspension with torsion beam and gas-charged shocks in the rear. On the base LS trim, standard features include a tilt steering wheel, rear defogger, air conditioning and an AM/FM stereo with auxiliary input. The LT1 trim comes standard front and rear floor mats, cabin filtration, heated outside mirrors, and a 6-speaker CD/MP3 sound system. The LT2 gets cruise control, alarm, keyless entry, power doors and windows, power heated mirrors, fog lamps and performance tires. Available options on all trims include anti-lock brakes, leather-wrapped steering wheel, steering wheel controls, an anti-theft system, woodgrain interior trim, trip computer, aluminum wheels, vinyl seats, sunroof and wireless cell phone integration. Standard safety features include front driver and passenger airbags with dual-stage deployment, and seat-mounted side airbags for front row occupants. A tire pressure monitoring system is also standard. One year of GM's OnStar Safe and Sound plan is standard all Aveos, and new this year is turn-by-turn navigation via GM's Directions and Connections plan, which is free for six months.