25 MPG combined isn’t going to win any efficiency awards, but the 2021 Toyota GR Supra 3.0L isn’t designed to sip fuel. It’s a performance coupe designed for thrilling driving experiences, and that focus dictates its fuel consumption. Buyers in the market for a GR Supra understand this trade-off, they prioritize sharp handling, potent acceleration, and head-turning style over maximizing their miles per gallon.

City and highway performance

The EPA estimates the 2021 GR Supra 3.0L achieves 22 MPG in the city and 30 MPG on the highway. The urban fuel economy reflects stop-and-go driving, where the engine is frequently accelerating from a standstill. The turbocharged inline-six requires more fuel to overcome inertia and deliver brisk acceleration in these situations. Conversely, the 30 MPG highway figure displays the engine’s efficiency at a constant cruising speed. It demonstrates the benefit of the advanced eight-speed automatic transmission, which allows the engine to operate at lower RPMs, improving fuel economy on long drives. A light foot is key to achieving those numbers, but let’s be honest, most Supra drivers aren’t known for their restraint.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 GR Supra 3.0L at exactly $2,300. This figure is based on driving 15,000 miles per year and uses the EPA’s estimate for average fuel prices. It’s a useful benchmark for comparing the Supra’s running costs to other vehicles. Of course, actual fuel costs can vary depending on individual driving habits, local gasoline prices, and the type of fuel used. The Supra requires premium fuel, so its owners need to factor the higher price of premium into their annual budgets.

Real-world expectations

While the EPA provides standardized estimates, real-world fuel economy can vary. Aggressive driving, frequent short trips, and prolonged idling can all negatively impact fuel consumption. Owners who regularly push the Supra’s performance can expect to see figures closer to the city estimate, or even lower. Conversely, those who primarily use the Supra for longer highway commutes and drive moderately may achieve or even slightly exceed the EPA’s highway rating. Ultimately, expect the fuel consumption sticker on the window to be a theoretical maximum.

How it compares

Compared to other sports cars, the 2021 GR Supra 3.0L has a predictable position. The Porsche 718 Cayman S, with its turbocharged 2.5L four-cylinder, achieves a slightly better 24 MPG combined. However, the Cayman carries a higher price tag, and many Supra buyers wouldn’t cross-shop the two. The BMW Z4 M40i, which shares its engine with the Supra, lands at an identical 25 MPG combined, reflecting the similarities in powertrain and vehicle weight. A Ford Mustang GT, with its 5.0L V8, manages around 19 MPG combined, a clear example of the fuel consumption penalty associated with larger displacement engines. For buyers considering all Toyota fuel economy data, the GR Supra offers a distinct combination of performance and relative efficiency within the Toyota lineup. The GR MPG across all years tells an interesting story.

Tips to maximize efficiency

Avoid rapid acceleration and hard braking. The GR Supra’s turbocharged engine is responsive, and it’s tempting to use its power every chance you get. However, smooth and gradual acceleration minimizes fuel consumption. Anticipate traffic flow and avoid unnecessary braking.

Maintain a steady speed on the highway. Using cruise control helps maintain a consistent speed, optimizing fuel economy during long drives. Resist the urge to constantly accelerate and decelerate, as this wastes fuel.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressures regularly and inflate them to the manufacturer’s recommended levels.

Minimize idling. Idling consumes fuel without covering any distance. If you’re stopped for more than a minute or two, turn off the engine. Many modern vehicles, including the GR Supra, feature automatic start-stop systems to reduce idling time, but use it carefully, understanding its impact on the starter motor’s lifespan.

Use the driving mode selector. While the “Sport” mode sharpens throttle response and improves handling, it also increases fuel consumption. Use the “Normal” or “Eco” mode for everyday driving to optimize fuel economy.