Fuel consumption at 12-13 litres/100km for a 2.0 ecotech. Dealer told me it was normal.
Transmission drove like a Ski-doo. High RPM. Dealer told me it was normal. Turned out to be a defect on the park & neutral switch. It gave-up in 2011, had to tow the car & replace the P&N switch, then fuel consumption went down to 8L/100 km. Claimed compensation for 3 years of over consumption. GM Canada refused, arguing that the dealer had always fulfilled the warranty.
Alternator gave up 4 times in 5 years.
Driver's belt buckle stuck in 2008. Replaced belt buckle.
Shift lock froze at -13 degrees Celsius in 2008. Replaced shift lock.
Smoke coming out of steering wheel in 2009. Engine shut down while driving. Replaced ignition switch.
Catalytic converter completely blocked in 2009. Replaced converter.
Heater fan motor gave-up in 2009. Replace fan motor.
Transmission downshifts for no reason when around 40km/h. Mechanic at dealer told me it's a "crappy transmission" and offered no fix option.
Back door handle jammed in 2010 due to rusted cable. Door couldn't close.
Electric door lock stopped working in 2012.
Windshield washer fluid pump gave-up in January 2014. Replaced pump.
Battery drains due to electric short in January 2014. They still cannot find the problem today.
I bought this car brand new, and I had more problems with it than all of my used cars put together.