Even the most hardcore car enthusiasts sometimes wince at the thought of spending money on routine maintenance. Oil and filter changes, tire rotations, and careful driving can keep your car running for the long haul, but taking care of your ride can also return big fuel savings as you drive. Ignoring the little things can lead to bigger problems down the road, and it can also drain your car’s fuel economy, costing you more for every mile you travel. We’ve covered some of the driving practices and routine maintenance items that can have the biggest impact on your fuel economy in this post, so let’s get rolling.
Most auto manufacturers recommend oil changes every 5,000 to 10,000 miles. We won’t comment on whether or not those are good rules to live by, but the reality is that clean oil of the right type helps your engine run better and consume less fuel. Oil changes also include replacing the oil filter, which further improves fuel economy. Dirty, clogged oil filters can starve the engine of lubrication, making it work harder and consume more fuel over time.
Air filter cleanliness has a much greater effect on fuel economy in older, carbureted cars, but it still offers benefits for modern vehicles with fuel injection. You may notice better acceleration, and the engine might not work as hard as a result.
Newer cars are essentially rolling computers, and when a sensor fails, it can cut into your fuel economy. Issues such as a malfunctioning oxygen sensor can reduce your gas mileage by double-digit percentages, so it’s worth spending the time and/or money to keep up with maintenance issues.
We’re not telling you to hypermile or drive like a slug, but it is important to be mindful of how you drive to preserve fuel economy. Avoid rapid acceleration, and try to drive as smoothly as possible. If you own a vehicle with a manual transmission, driving in the highest gears possible will keep the engine’s revolutions per minute (RPM) lower, helping it consume less fuel.
KBB Fuel-Saving PlaybookUse this quick-reference guide to reduce fuel costs, improve mpg, and keep your travel plans flexible during busy seasons, weather disruptions, or price spikes.
Drive calmer, save more Smart prep beats panic fill-ups Less drag = better highway mileage Maintenance matters
During winter, holidays, and storm threats, aim to stay above half a tank. That extra range gives you options when stations are crowded or supply is delayed.
Use gas-price apps and maps to locate lower-cost stations. Spots away from freeway exits and downtown cores often beat convenience-stop pricing.
Batch errands instead of making multiple short drives. Fewer starts and fewer miles immediately reduce your weekly fuel burn.
Higher speed dramatically raises fuel use. Even a modest drop in cruising speed can recover several mpg on longer drives.
Avoid sudden throttle and hard braking. Steady acceleration and anticipating traffic flow can improve mileage and reduce wear on major components.
Roof racks, boxes, and bike carriers increase drag. If you do not need them today, take them off—especially before highway travel.
Consistently using better detergent packages can help keep engines cleaner over time. During shortages, availability comes first, then return to your preferred fuel.
If your vehicle says premium is recommended (not required), regular fuel is usually fine. Save the extra money for maintenance or tire service.
Underinflated tires increase rolling resistance and lower efficiency. Verify pressures on cold tires and match the door-jamb specification.
Climate control does use energy, but comfort and alertness still matter. On mild days, reduced air conditioning use can trim fuel consumption.
Cruising at 55 mph vs 65 mphNotable mpg gain
Cruising at 75 mph vs 65 mphClear mpg loss
Roof-mounted cargo setupLarge efficiency hit
In instrumented highway and mixed-driving evaluations, speed and aerodynamic load repeatedly produced the largest mpg swings.
