Posted on 10/31/2025
You know your car pretty well. So when you notice you’re stopping for gas more often than usual, it’s usually not your imagination. A sudden drop in fuel economy is your car’s way of telling you that something isn’t running quite right. Even small changes under the hood can throw off your miles per gallon. The good news is that most of the causes are easy for a technician to pinpoint and fix once you know where to look. Fuel System Problems When fuel efficiency drops, the fuel system is usually the first place we check. Dirty or clogged fuel injectors can throw off the air-fuel balance, causing uneven combustion. That means your engine burns more gas just to maintain normal performance. A weak fuel pump or a faulty pressure regulator can do the same thing. Too much fuel means waste, while too little makes the engine work harder. Replacing a clogged fuel filter, cleaning the injectors, or correcting pressure issues often brings mi ... read more