2011 Detroit Auto Show: 2012 Mercedes-Benz C-Class Photos

From the outside, the changes in 2012 C-Class, so less casual observers might not even notice. The only other change is slightly lower rear bumper, revised taillights, and more modern wheels. When you get into the new C-Class, it's a completely different story, as Mercedes-Benz designers rethought the entire interior.

While these touches give the new C-Class a decidedly more upscale feel than the outgoing car, the biggest improvement is that both pop-up navigation system. Each offered the engine is now equipped with direct injection and Mercedes' seven-speed automatic transmission with revised gear ratios for better fuel economy.

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2011 Detroit Auto Show: 2012 Chevrolet Sonic Photos

Three hundred 65 days ago, General Motors showed a preview of next-generation subcompact line at the 2010 North American International Auto Show. The European-spec model, which continues to bear the Aveo name badge, was launched at the Paris Motor Show in September 2010.

GM claims certain features, including 59.4-inch track width front and rear, a stiffened front cradle and optional 17-inch wheels and sporttires lend a sporty feeling Sonic on the road. GM had to upgrade Sonic inner to go along with the new look, chassis and power train.