Skip the auto shop - Our mechanics make house calls

Q: Poor gas mileage, sluggish engine. 1995 BMW 318is

asked by on

I've been getting a very poor gas mileage ever since I bought this used car. It has a 1.4 L engine and I expected for it to be more economical. The engine is a bit sluggish as well. I put 215mm tires on the car, which is a bit wider than usual. Could this be the cause? How can I improve the gas mileage?

Hello there, poor gas mileage is a common issue with the 1995 BMW 318is. In most cases, wider tires are not recommended, but this likely would not drop gas milage significantly. The most likely causes would be spark plugs, coil, leaking fuel injectors, fuel pumps, vacuum leaks, or an exhaust leak. The gas mileage should return to its normal level once the fault is resolved. Have a qualified technician, like one from YourMechanic, diagnose why you are getting poor gas mileage. From there, they can recommend adjustments to have this addressed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Buying a high mileage car and I am on a tight budget.

Hi there. When it comes to buying a pre owned vehicle, you will want to check the vehicle out for the condition it is in. Check all of the suspension, steering, brakes, running condition, and the tires. If the engine...

Q: weird engine noise

Hello. Though this can be caused by a transmission failure, most of the time it is either caused by a cracked flywheel or a failing timing chain. I usually try to narrow down the location of the noise as that...

Q: Tire size

You can look in the driver's door or in the glove box cover for the tire size for your vehicle. If you change the tire size from the size the car came with you will change the transmission shifting, and...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...