Do K&N air filters really work? Do they increase gas mil...

Q: Do K&N air filters really work? Do they increase gas mileage or horsepower ?

asked by on July 31, 2017

Do K&N air filters really work? Do they increase gas mileage or horsepower ?

Hi There, This is somewhat of a relative question depending on the type of vehicle (you did not specify) and what type of filter you are currently using. Most of today’s modern vehicles have computers with engine management systems that make adjustments to air/fuel mixtures constantly as the vehicle runs. Depending on the way the driver handles the vehicle and the way the motor is tuned, these filters may increase horsepower very minimally (~5hp or so) and may also increase fuel mileage slightly as well. The important thing to keep in mind, however is how the car is tuned and how the driver behaves in terms of driving habits.

Was this answer helpful?
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

Certified inspections?

No, this is not a service YourMechanic offers at this time. Thanks for thinking of us though!

Slight jerk when changing gears, especially when starting from a complete rest.

This may be a sign of a failing mass air flow sensor or a throttle position sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior...

Weird low sqeeking noise when braking and turning the steering wheel

You should have your suspension and brakes rechecked to see if noise is coming from brakes or the suspension and then a diagnosis can be made. You may have noisey brakes or sway bar links.

Related articles

Electric Cars and How They Work
Electric cars use an electric motor driven by a control unit. Their batteries are filled at charging stations and they produce no tailpipe emissions.
P0918 Gear Shift Position Circuit – Intermittent Malfunction
P0918 means there is an issue with a circuit in one of the lever positions, most likely= due to a bad transmission sensor.
The Top 10 Most Problematic Cars
All cars have issues, from grinding brakes to gasket leaks. The Ford Explorer's and Honda Civic's bad transmissions rank them as the most problematic.