How to reduce the weight of a car

Updated April 17, 2017

Many car enthusiasts want to reduce the weight of their cars. Reducing weight can increase performance as well as gas mileage. For every 45.4 kg (100 lbs), gas mileage is reduced by two per cent. A weight reduction for your car can increase acceleration, help with better braking and boost general handling of the vehicle. Reduce your car's weight at home, or take your car to the shop for these mods.

Install carbon fibre parts. Carbon fibre parts will be lighter than the stock parts originally on the car. Replace the bonnet and boot with a carbon fibre bonnet and boot. The weight reduction will vary model to model, but carbon fibre parts can help reduce around 13.6 kg (30 lb). You can also lose an additional 6.8 to 9 kg (15 to 20 lb) by replacing the header and exhaust with lightweight parts.

Replace the stock battery. Using a lightweight battery can reduce about 4.54 kg (10 lb) from the weight of your car.

Remove the air conditioner. The AC unit can be taken out to reduce weight, but think carefully about the summer months before you take this step.

Replace the stock wheels. Lightweight wheels can reduce another to 3.62 to 4.54 kg (8 to 10 lb).

Remove small items. The cigarette lighter, ashtray and lid, cup holders, headrests for seats, glove compartment door -- individually these items might not seem like much, but together you can shed a few pounds.

Remove any seats you won't be using. If you'll be the only one using the car, you can remove the passenger seat and back seats to reduce an additional 15.9 kg (35 lb) from your car's weight. While doing this, also remove the floor mats and carpeting to free up an additional 4.54 kg (10 lb). You can also replace the driver's seat with a lightweight model.

Remove the stereo and speakers if you don't plan on listening to music in the car.

Remove all unnecessary items from the boot. Don't keep your golf clubs or heavy bookbag in it.


When replacing parts, make sure the new parts are high quality and from a reputable company.

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About the Author

Lillian Block has been writing since 2005. She has been an intern at various media organizations, including WIBX News Radio and at the weekly arts and entertainment publication "Electric City." She was the editor of her college newspaper. She is pursuing a Bachelor of Science in journalism studies from Utica College of Syracuse University.