31 MPG combined won’t impress everyone, but it’s a reasonable expectation for the 2021 Mazda 3 4-Door 2WD with the 2.0L engine. This Mazda 3 configuration is for a specific buyer: someone who values sleek design, engaging handling, and a refined interior over saving money on gas. Fuel economy matters, of course, but it’s less important than the Mazda 3’s appealing styling and sporty character. It’s a conscious trade-off, and many drivers gladly accept it.

City and highway performance

The EPA estimates for the 2021 Mazda 3 2.0L are 28 MPG in the city and 36 MPG on the highway. These figures reflect the Mazda 3’s driving experience. The 2.0L engine, while not the most powerful, provides enough power for city driving, allowing for quick merges and responsive handling. On the highway, the Mazda 3 maintains fuel efficiency without feeling strained. The smooth 6-speed automatic transmission helps with both city and highway efficiency, keeping the engine at the right RPM for power and fuel conservation.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Mazda 3 2.0L at $1,400. This is based on driving 15,000 miles per year and assumes current national average fuel prices. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and changing gas prices, but this $1,400 provides a standard point for comparison. It’s helpful when determining the overall cost of owning the Mazda 3 2.0L, along with insurance, maintenance, and potential repairs.

Real-world expectations

EPA estimates are a good starting point, but real-world fuel economy can differ based on driving style, road conditions, and even weather. Expect to see numbers close to the EPA estimates if you accelerate smoothly, avoid long idling periods, and drive at a constant speed on the highway. More aggressive driving, frequent stop-and-go traffic, and hilly terrain will likely lower MPG. However, even in less ideal conditions, the Mazda 3 2.0L should remain reasonably fuel-efficient because of its well-engineered powertrain and focus on driving dynamics.

How it compares

The Honda Civic Sedan with its standard 2.0L engine gets a slightly better combined EPA rating of 33 MPG, showing the Civic’s focus on efficiency. The Toyota Corolla LE gets an impressive 34 MPG combined. These Japanese rivals often compete with the Mazda 3, so the fuel economy differences are relevant for buyers weighing their options across all Mazda fuel economy data. For those who prioritize style and driver engagement, the 3 MPG difference between the Mazda 3 and the Corolla might be an acceptable trade-off. Ultimately, it depends on what you want. A buyer who likes the Mazda 3’s design might accept slightly lower MPG for its sportier character. On the other hand, someone focused on saving money on gas might choose the Corolla or Civic.

Tips to maximize efficiency

Gentle acceleration is important for maximizing fuel economy in the Mazda 3 2.0L. Avoid sudden starts and stops, and gradually increase your speed. The engine doesn’t need to be revved hard to perform well; keep the RPMs moderate, and let the automatic transmission do its job.

Tire pressure affects fuel efficiency. Make sure your tires are inflated to the manufacturer’s recommended pressure, which is on the sticker inside the driver’s side doorjamb. Underinflated tires create more rolling resistance, which lowers fuel economy.

Reduce unnecessary weight. Extra cargo in the trunk or backseat adds to the vehicle’s weight, making the engine work harder and use more fuel. Remove any items you don’t regularly need, and lighten your load when possible.

Use cruise control on the highway when you can. Maintaining a consistent speed can improve fuel economy, especially on long trips. Be aware of changing traffic conditions and be ready to turn off cruise control when needed.

Avoid long idling periods. If you’re stopped for more than a minute, turn off the engine. Modern engines, like the one in the Mazda 3, are designed to restart quickly and efficiently, and restarting uses less fuel than idling for a long time.