I obsessed over the engine break-in period when I got my first new car back in 2000. The owner's manual said to avoid hard acceleration and braking for the first 1,000 miles, and it all had to do with ...

When you drive on a new pair of tires, they might not feel as good as your old, worn-out pair. But it's worth breaking them in for a few hundred miles.

Modern engines leave the factory far tighter and cleaner than they did a generation ago, but the first few hundred miles you put on a new car still shape how that powertrain feels years later. The ...

Everyone seems to have their own theory for engine break-in procedures these days, but sometimes sticking to the old-fashioned way of doing things is the best. "Getting a new engine is a wonderful ...