28 MPG combined is respectable for the 2018 Mazda CX-5 4WD 2.2L diesel, placing it among efficient compact crossovers that are enjoyable to drive. This isn’t a hybrid aiming for Prius-level numbers. It’s a stylish, well-equipped vehicle that prioritizes driving enjoyment, and its fuel economy shows that balance.

City and highway performance

The EPA rates the 2018 CX-5 diesel at 27 MPG in the city and 30 MPG on the highway. These figures are close, suggesting the engine’s efficiency stays consistent regardless of driving conditions. The CX-5’s responsive diesel engine and smooth-shifting six-speed automatic help it navigate urban environments without feeling sluggish, contributing to that strong city MPG. On the highway, that same combination offers relaxed cruising and decent passing power, allowing it to reach that 30 MPG estimate without much effort.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Mazda CX-5 diesel to be $2,000. This is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on your driving habits, the type of driving you do, and the price of diesel fuel in your area, but $2,000 offers a useful benchmark for comparison. Diesel prices are often more volatile than gasoline, so monitoring local fuel costs is important for CX-5 diesel owners.

Real-world expectations

EPA estimates provide a useful baseline, but real-world fuel economy often differs. CX-5 diesel owners generally report figures that align closely with the EPA’s estimates, although aggressive driving or frequent short trips can reduce fuel economy. Many drivers have praised the CX-5 diesel’s ability to deliver consistent fuel economy whether in city or highway driving. Ultimately, driving style is the biggest factor, although proper maintenance, like keeping tires inflated and avoiding unnecessary cargo weight, can affect results.

How it compares

In the crowded field of compact crossovers, the CX-5 diesel’s fuel economy holds its own, but it’s not a category leader. Gas-powered competitors like the Honda CR-V (around 28 MPG combined) and Toyota RAV4 (around 30 MPG combined for non-hybrid models) offer comparable or slightly better fuel economy. However, the diesel CX-5 delivers its fuel economy with extra torque and a more premium feel, a trade-off that appeals to many drivers. Hybrids like the RAV4 Hybrid (40 MPG combined) offer significantly better fuel economy but come with a higher price tag and a different driving experience. Potential owners should consider what they value most: maximum fuel savings or a more engaging driving experience with ample power and torque.

Tips to maximize efficiency

Use the CX-5’s “Sport” mode sparingly. It sharpens throttle response and holds gears longer for more spirited acceleration, but it also consumes more fuel. Use it carefully for merging or passing, but keep it in “Normal” mode for everyday driving to maximize efficiency.

Pay attention to tire pressure. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tires regularly and inflate them to the pressure recommended on the doorjamb sticker. This is especially important for all-wheel-drive vehicles, as maintaining consistent tire pressure helps the system operate at its most efficient.

Smooth acceleration and braking are key to maximizing fuel economy in any vehicle, but it is critically important in the CX-5 diesel. Avoid sharp, sudden movements that require the engine to work harder. Anticipate traffic flow and maintain a steady speed whenever possible.

Minimize idling. Diesel engines are generally more efficient than gasoline engines at idle, but unnecessary idling still wastes fuel. If you’re stopped for more than a minute, turn off the engine. This simple step can save a surprising amount of fuel over time, especially if you frequently encounter stop-and-go traffic.

Keep up with routine maintenance, paying close attention to air filter condition. A clogged air filter restricts airflow to the engine, which reduces performance and fuel economy. Replacing the air filter at the recommended intervals ensures optimal engine performance and fuel efficiency. Owners might also benefit from tracking CX 5 MPG across all years and comparing trends in efficiency relative to maintenance cycles.

Remember to check all Mazda fuel economy data to see how it fits into the Mazda lineup.