Posted on 8/29/2025
Many drivers eventually notice their car isn’t going as far on a tank of gas as it used to. A small dip in efficiency can happen naturally as a vehicle ages, but significant or sudden decreases usually mean something is wrong. Since fuel efficiency affects both your wallet and your vehicle’s performance, it’s essential to understand what could be causing the issue and take action before it worsens. Tire Pressure and Rolling Resistance One of the simplest causes of poor fuel economy is low tire pressure. Underinflated tires create extra resistance on the road, forcing your engine to work harder. Even being a few PSI under the recommended level can reduce gas mileage. Uneven wear or misaligned wheels can have a similar effect. Checking tire pressure monthly and keeping your wheels aligned is an easy way to maintain fuel efficiency. Engine Performance Issues If your car’s engine is struggling, it will burn more fuel to make up ... read more