23 MPG combined is an acceptable, but not exceptional, figure for the 2021 Subaru Ascent 2.4L 4-cyl. It’s what families pay for a genuinely spacious three-row SUV that comes standard with all-wheel drive and a reputation for reliability. This isn’t a vehicle bought by people trying to save every drop of fuel; it’s purchased by those who need the Ascent’s capabilities and accept its fuel consumption. The Ascent buyer prioritizes passenger space, safety, and all-weather confidence over squeezing every last mile from a gallon of fuel.

City and highway performance

The EPA estimates the 2021 Subaru Ascent’s city fuel economy at 21 MPG, a number reflecting the typical stop-and-go driving conditions most families encounter during their daily routines. The 2.4L turbocharged engine provides enough low-end torque for city maneuvering, but consistent acceleration and idling inevitably take a toll. On the highway, the Ascent fares slightly better, achieving an estimated 27 MPG.

This improvement is thanks to reduced stop-and-go and the engine operating at a more consistent and efficient speed. The Ascent’s automatic transmission helps optimize fuel economy on the open road, keeping the engine in its most efficient range. Still, aerodynamics and weight mean highway MPG won’t match a smaller, lighter vehicle.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2021 Subaru Ascent is $1,900. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that this is an estimate, and your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and prevailing gas prices in your area. Drivers who consistently drive more than 15,000 miles annually or frequently encounter stop-and-go traffic can expect to exceed the $1,900 estimate. Conversely, those who drive less or primarily stick to highway driving may find their fuel costs are lower.

Real-world expectations

While the EPA provides a standardized measure of fuel economy, real-world driving conditions often differ. Factors such as weather, terrain, driving style, and cargo weight can all impact the fuel efficiency of the 2021 Subaru Ascent. Drivers who frequently carry passengers or cargo will likely experience lower fuel economy than those who typically drive with an empty vehicle. Aggressive acceleration and hard braking can also significantly reduce MPG.

It’s reasonable to expect that in mixed driving, the Ascent will deliver fuel economy close to the EPA’s combined rating of 23 MPG, but individual results will vary. It’s always a good idea to track your own fuel consumption to get a more accurate picture of what your Ascent is costing you. You can view ASCENT MPG across all years to see trends.

How it compares

The 2021 Subaru Ascent’s fuel economy sits roughly in the middle of the three-row SUV segment. The Toyota Highlander Hybrid, for example, achieves a combined rating of 36 MPG, significantly outperforming the Ascent. However, the Highlander Hybrid costs more. Other competitors, such as the Honda Pilot (23 MPG combined for the front-wheel drive version) and the Ford Explorer with its base engine (24 MPG combined for the rear-wheel drive version), offer similar fuel economy to the Ascent. However, those vehicles don’t come standard with all-wheel drive, a major selling point for Subaru loyalists. The Kia Telluride also mirrors the Ascent’s 23 MPG combined. For those seeking a three-row SUV with standard all-wheel drive, the Ascent’s fuel economy is a reasonable compromise. Review all Subaru fuel economy data to see how this compares to other models in the lineup.

Tips to maximize efficiency

Gentle acceleration and braking are critical for maximizing fuel economy in any vehicle, but particularly in the Ascent, where the turbocharged engine is sensitive to throttle input. Avoid aggressive starts and anticipate traffic flow to minimize unnecessary braking. Maintaining a steady speed on the highway will also contribute to improved MPG.

Proper tire inflation is an often-overlooked aspect of fuel efficiency. Check your Ascent’s tire pressure regularly and ensure it’s inflated to the recommended level, which can be found on a sticker inside the driver’s side doorjamb. Underinflated tires increase rolling resistance and reduce fuel economy.

Minimize unnecessary weight. Carrying extra cargo in your Ascent not only reduces fuel economy, but also puts additional strain on the engine and brakes. Remove any items you don’t need to lighten the load and improve MPG, especially on longer trips.

Take advantage of the Ascent’s adaptive cruise control on the highway. This system can help maintain a consistent speed and following distance, which can improve fuel economy compared to manually controlling the throttle. Be mindful of its limitations and remain attentive to your surroundings while using cruise control.

Regular maintenance is essential for optimal fuel efficiency. Ensure your Ascent’s engine is properly tuned, and that the air filter is clean. A well-maintained engine operates more efficiently, resulting in better MPG.