Car upgrades can help boost your vehicle's horsepower, fuel efficiency and comfort -- but not all are worth the money. "I ...

And those gas-powered cars are extremely inefficient. Their engines only use a quarter of the fuel’s energy to turn the wheels, with the rest wasted as heat and released via an exhaust pipe.

It funnels exhaust gases from all the cylinders and routes them to the car’s catalytic converter. V-type engines have a separate manifold for each cylinder bank. A leak in the exhaust manifold ...

Stick your head too close to an old car's exhaust, and we're willing to be dollars to donuts that you'll start coughing. It turns out that vehicle exhaust isn't just bad for you until the air clears.

Bugatti customers have begun configuring their Tourbillons, so the company has revealed a new Équipe Pur Sang package. French ...