The 2021 Mazda CX-30 4WD with its 2.5L engine gets a combined fuel economy rating of 26 MPG. While not class-leading, this number is a reasonable compromise for buyers who want engaging driving and a premium interior, even if it means less gas savings in a subcompact crossover. This reflects the CX-30’s goal to deliver Mazda’s fun-to-drive character in an entry-level package.

City and highway performance

The EPA breaks down the CX-30’s fuel economy, with 24 MPG in the city and 31 MPG on the highway. The city figure shows the stop-and-go conditions where the CX-30’s responsive throttle and quick-shifting six-speed automatic are useful. The highway number shows the engine’s ability to cruise efficiently once at speed, helped by the transmission’s well-spaced ratios. These two numbers show a vehicle that can handle both city commutes and longer road trips with acceptable fuel consumption. Many owners find the highway MPG particularly helpful on weekend adventures, a common use for this type of small SUV.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Mazda CX-30 4WD 2.5L is $1,700. This is based on driving 15,000 miles per year and using national average fuel prices. This gives buyers a benchmark to compare the CX-30’s long-term ownership costs against other vehicles in its class. Individual fuel costs may vary depending on driving habits, local fuel prices, and the type of fuel used. However, the $1,700 figure is a standardized way to assess the CX-30’s running expenses over a year.

Real-world expectations

The EPA uses a standardized testing method, but real-world fuel economy often differs from the official numbers. Driving style, terrain, weather, and vehicle load can all change the MPG you get. Owners who frequently engage the CX-30’s all-wheel-drive system, drive fast, or carry heavy loads may see fuel economy closer to the city rating, even on the highway. Drivers with a relaxed style and good driving conditions may get more than the EPA’s highway estimate. Reading owner forums and online reviews can provide a broader view of the CX 30 MPG across all years.

How it compares

The CX-30’s fuel economy puts it in a competitive segment. For example, the Honda HR-V with all-wheel drive gets a slightly higher 28 MPG combined. The Subaru Crosstrek, known for its standard all-wheel drive, also beats the CX-30 with a combined 29 MPG. However, the Toyota C-HR, which is front-wheel drive only, gets just 29 MPG combined, showing that AWD affects economy. These comparisons are important for buyers weighing the trade-offs between fuel efficiency, all-weather capability, and driving enjoyment. Some will trade a few MPGs for the CX-30’s upscale interior and sharper handling. Reviewing all Mazda fuel economy data can put this model into context.

Tips to maximize efficiency

One way to improve fuel economy is to keep proper tire inflation. Underinflated tires increase rolling resistance, which makes the engine work harder and use more fuel. Check your tire pressures regularly and inflate them to the recommended levels on the driver’s side doorjamb.

Avoid fast driving, such as rapid acceleration and hard braking. These driving styles use fuel quickly. Instead, accelerate smoothly and gradually, and watch traffic to avoid braking too much. The CX-30’s responsive engine can be tempting, but a gentle touch will result in better mileage.

Remove unnecessary weight from the vehicle. Extra cargo adds to the vehicle’s load, which decreases fuel economy. Remove any items you don’t need from the trunk or cargo area, mostly heavy things.

Use cruise control on the highway to keep a consistent speed. This optimizes fuel consumption and reduces speed changes. The CX-30’s adaptive cruise control system can maintain a safe and fuel-efficient following distance.

Minimize idling. If you’re stopped for more than a minute or two, turn off the engine to save fuel. Modern engines restart quickly, so there’s no need to idle them.