Skip the auto shop - Our mechanics make house calls

Q: After multiple replacements, gas mileage is worse - 1997 Ford Aspire

asked by on

After purchasing this car, it has been like a project that continually needs work and repairs. I first had a thorough engine tune up, cleaned the interior, and purchased two new front tires. Then I bought a radio and new speakers. Also, I replaced the following: left wheel bearing, cv joints, side light bulbs, interior light bulb, new DieHard battery, motor mounts, rear lift gate hydraulic lifts, and performed an oil change. The car had been used constantly by the previous owner. The car still needs two back tires which I will get later. The car is supposed to get 40 mpg and I am only getting 30-33 and sometimes only 25. (I have a light foot.) The car starts great, picks up well, accelerates with good performance, and the engine runs great too. Most of my driving is on the highway. What is my next step and what do I do to get better gas mileage?

A: The fuel economy will change depending on t...

The fuel economy will change depending on the whether the transmission is manual or automatic. According to fueleconomy.gov the manual transmission Ford Aspire is getting a combined 33mpg while the automatic get 26mpg. Ford's initial adverts were 34 mpg city and 42 highway but this seems to have downgraded by the US Department of Energy. A slipping clutch or dragging brake are common thieves of fuel economy so these items should be checked along with ensuring proper tire pressure as well. Unmetered air leaks or a bad oxygen sensor can also rob fuel economy. To have the mileage problem scoped out more thoroughly, you may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the equipment and scan tool to look at engine data to see if there are any anomalies that could be robbing your fuel economy.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Improving gas mileage - 2012 Mitsubishi Outlander Sport

The savings in gas, if they exist, would only be between 0 and 5 percent. The only way to know for sure is do a test: drive the car a specified distance, with and without 4WD and compare the results...

Q: How Does Engine Timing Work?

Engine timing is actually a closely coordinated dance between valve timing, injector timing, and spark timing. Valve timing is the control of opening and closing the intake and exhaust valves in synchronization with the up / down movement of the...

Q: Gas leaking

A gas leak I never something to put off. The most common gas leak on this vehicle is from the metal line under the vehicle. These tend to corroded and break over time. The leak will need to be located...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.