Just a few decades ago, the world was rich with coupes for every purse and purpose, including Cadillacs and Lincolns.

This year's What Car? survey of over 30,000 motorists has revealed the most unreliable cars to buy, with the worst owner experiences. Here are the top 10 models that'll cause the most headaches.

I picked up 2016 Mercedes-Benz C300 Coupe from my friends at Stevens Creek Mercedes-Benz & AMG. As I filmed a walk through, ...