Here are 2025's most popular questions and answers from The Journal's Car Doctor column, from rotating tires to oil changes.

Discover how professional racing engine diagnostics reveal hidden problems in your car. Expert insights from Miami's advanced auto repair specialists.

Abstract: In this paper, an independent observers-based fault diagnosis method is proposed for multiple sensor faults of the full-vehicle active suspension system with an inaccurate model. To address ...

When the check-engine light snaps on, it is not a suggestion, it is your car’s way of saying something in the powertrain or ...

LiquidSpring is a smart, fluid-based suspension system that constantly adjusts stiffness and ride height to keep a heavy ...

YouTube creator and self-taught engineer Jeremy Fielding built his regenerative braking rig from spare parts, then made a ...

Abstract: A distributed acoustic sensors (DAS) system is investigated in this paper to offer vehicle occupancy detection for intelligent transportation systems (ITS). Accurate detection of the number ...

Reader question: Why am I being charged Neenah's $30 wheel tax? I don't live in Neenah. Answer: My guess is you live in the Village of Fox Crossing, or perhaps in the Town of Neenah, Town of Vinland ...

The EPA has rejected a request from Ohio lawmakers to end the E-Check vehicle emissions testing program in seven Northeast Ohio counties. State officials had proposed replacing the physical inspection ...

COLUMBUS, Ohio—The U.S. Environmental Protection Agency has rejected Ohio lawmakers’ attempt to allow Cleveland-area vehicle owners to avoid E-Check emissions testing simply by signing a form ...

When considering a used car, information is power. One of the best ways to gain insight into a vehicle’s background is to check vehicle details online before making any commitments. Online vehicle ...