17 MPG combined. Let’s be blunt: that’s not a typo, and it’s definitely not winning any awards for fuel efficiency. But for the 2021 Toyota 4Runner 2WD with the 4.0L V6, it’s simply the price you pay. This isn’t a vehicle bought for lower fuel costs; it’s purchased for its rugged dependability, its go-anywhere (well, almost anywhere, given the 2WD) capability, and its unwavering commitment to body-on-frame construction in a world of homogenized crossovers. The 4Runner 2WD buyer knows precisely what they are getting, and fuel economy is generally pretty low on that list.

City and highway performance

The EPA ratings break down to 16 MPG in the city and 19 MPG on the highway. That single MPG difference between city and highway is a good indicator of the 4Runner’s character. It works the same way in every driving condition: the five-speed automatic transmission prioritizes durability over smooth shifts, and the naturally aspirated V6 prioritizes low-end grunt over high-revving thrills. This powertrain is not calibrated for maximizing fuel efficiency. Accelerating to merge on the highway requires a heavier foot than in many modern vehicles, which burns more fuel. The 4.0L engine works hard to overcome the 4Runner’s substantial weight, contributing to the lower MPG numbers regardless of the environment.

Annual fuel cost

The 2021 Toyota 4Runner 2WD 4.0L 6-cyl carries an EPA-estimated annual fuel cost of $2,600. This figure is based on driving 15,000 miles per year and using national average fuel prices. Depending on local fuel costs and individual driving habits, the actual cost could be higher or lower. But that $2,600 provides a solid benchmark to consider when budgeting for vehicle ownership. It’s a reminder that while the 4Runner offers legendary reliability, it will cost more to keep fueled than many of its competitors.

Real-world expectations

While the EPA estimates are a good starting point, it’s critical to understand that real-world MPG can vary depending on driving style, terrain, and even tire pressure. Aggressive acceleration, frequent stop-and-go traffic, and hauling cargo will all negatively impact fuel economy. Owners who primarily use their 4Runner for commuting in urban environments may see numbers closer to the city estimate, while those who do more highway driving could potentially approach the 19 MPG figure. Keep in mind that modifications, like larger tires, can affect the accuracy of your speedometer and odometer, also impacting your fuel economy calculations.

How it compares

Compared to other mid-size SUVs, the 4Runner 2WD lags noticeably in fuel economy. The Toyota Highlander 2WD V6, for instance, achieves 21 MPG combined. Even truck-based SUVs like the Ford Bronco (with its base 2.3L turbo engine) offer slightly better fuel economy in some configurations, sitting around 20 MPG combined. The Jeep Grand Cherokee 2WD with its V6 achieves a combined 22 MPG. The 4Runner’s lower figures are a direct trade-off for its proven off-road capability (even in 2WD form, its architecture is more reliable), its long-term reliability, and its distinctive, truck-like driving experience. Those who prioritize fuel savings over these attributes would likely find better options elsewhere, but a buyer considering this model is likely looking at 4RUNNER MPG across all years to find the version they prefer.

Tips to maximize efficiency

While the 4Runner 2WD isn’t known for its fuel efficiency, there are still steps you can take to minimize fuel consumption. One of the easiest is to adopt a smoother driving style. Avoid rapid acceleration and hard braking, and maintain a consistent speed on the highway. Anticipate traffic flow to reduce the need for sudden stops and starts.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which forces the engine to work harder and burn more fuel. Check your tire pressure regularly and inflate them to the manufacturer’s recommended specifications. You can find the recommended pressure on a sticker located on the driver’s side doorjamb or in your owner’s manual.

Consider reducing the amount of weight you carry in your 4Runner. Extra cargo adds strain to the engine and negatively impacts fuel economy. Remove any unnecessary items from your vehicle, especially heavy objects. Even small reductions in weight can make a noticeable difference over time.

Keep up with regular maintenance. A well-maintained engine is a more efficient engine. Schedule regular tune-ups, oil changes, and air filter replacements. A clean air filter allows the engine to breathe more efficiently, while fresh oil reduces friction and improves overall performance. Refer to your owner’s manual for recommended maintenance intervals.

Finally, avoid prolonged idling. If you’re going to be stopped for more than a minute or two, turn off the engine. Idling consumes fuel without actually moving the vehicle. Modern engines are designed to be easily restarted, so there’s no need to let them run unnecessarily. To research other Toyota vehicles, visit all Toyota fuel economy data.