18 MPG combined won’t win any awards, but for the 2018 Toyota 4Runner 2WD with the 4.0L V6, it’s typical. No one buys this 4Runner for stellar fuel efficiency. They buy it for legendary Toyota reliability, impressive off-road capability (even in 2WD form), and a rugged, body-on-frame design that evokes a simpler era. The fuel consumption is part of the deal many are willing to make to get the vehicle they want.

City and highway performance

The EPA estimates the 2018 4Runner 2WD at 17 MPG in the city and 21 MPG on the highway. These figures reflect the demands placed on the 4.0L V6 engine and the five-speed automatic transmission. In urban environments, frequent stops and starts force the engine to work harder, reducing fuel efficiency. On the open road, the 4Runner fares slightly better, but its boxy shape and considerable weight impede its potential for truly efficient cruising. The five-speed transmission, while incredibly strong, also contributes to lower economy, as modern SUVs often use six, eight, or even ten-speed automatics to optimize fuel usage at higher speeds.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Toyota 4Runner 2WD at $2,450. This figure is calculated using an assumption of 15,000 miles driven per year and based on the national average fuel price at the time of calculation. Your actual fuel costs may vary based on your driving habits, local fuel prices, and the specific conditions in which you operate your 4Runner.

If you drive more aggressively or live in an area with higher gas prices, expect to exceed the $2,450 estimate. Conversely, those who drive fewer miles annually or live where fuel is cheaper may spend less.

Real-world expectations

While the EPA provides a standardized estimate, real-world fuel economy can deviate. Many 4Runner owners report figures close to the EPA estimates, but variations always exist. Factors like tire pressure, vehicle maintenance, driving style, and even the type of terrain you frequently drive on can noticeably impact your MPG. Expect a slight dip in fuel economy if you regularly carry heavy loads or if your 4Runner is equipped with aftermarket accessories like a roof rack or oversized tires.

How it compares

Compared to other SUVs in its class, the 2018 4Runner’s fuel economy is not its strong suit. Consider the 2018 Jeep Grand Cherokee 2WD with its 3.6L V6, which offers slightly better fuel economy, rated at 19 MPG combined. The Nissan Murano, with its continuously variable transmission (CVT), boasts even more impressive numbers, reaching 24 MPG combined.

However, neither of those vehicles possesses the same off-road pedigree or the same body-on-frame construction as the 4Runner. And while a 2018 Honda Pilot achieves around 22 MPG combined, it caters to a different buyer, one prioritizing interior space and car-like handling over go-anywhere capability. Those who are looking for better fuel savings from Toyota can view all Toyota fuel economy data, and those interested in seeing the history of this SUV should check out 4RUNNER MPG across all years.

Tips to maximize efficiency

A smooth and steady driving style will have the biggest impact on fuel economy with your 4Runner. Avoid aggressive acceleration and hard braking. Anticipate traffic flow and maintain a consistent speed whenever possible, especially on the highway. The 4.0L engine rewards a gentle touch.

Ensure your tires are properly inflated to the recommended pressure as indicated on the sticker inside the driver’s side door. Underinflated tires increase rolling resistance, which directly decreases fuel efficiency. Check your tire pressure regularly, especially with changes in temperature.

Regular maintenance is critical for optimal fuel economy. Keep your engine properly tuned, replace air filters as recommended, and use the recommended grade of motor oil. A well-maintained engine operates more efficiently, burning fuel more effectively.

Minimize unnecessary weight. Remove any cargo or accessories from the roof rack or interior that you don’t need on a daily basis. Extra weight increases the engine’s workload, leading to lower fuel efficiency. Even small reductions in weight can make a difference over time.

If you have larger or more aggressive tires, consider returning to the factory wheel and tire sizing.

Avoid excessive idling. If you anticipate stopping for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, and prolonged idling burns fuel unnecessarily.