21 MPG combined for the 2025 Toyota 4Runner 4WD 2.4L 4-cyl marks a significant shift for a vehicle long known for capability and, frankly, high fuel consumption. This isn’t just a number; it’s a statement that the 4Runner, while keeping its off-road prowess, is finally entering a new era of powertrain modernization. For the dedicated enthusiast who buys a 4Runner for genuine exploration, the angler heading deep into the backcountry, the overlander chasing remote campsites, the weekend warrior with a dirt bike on the hitch, this figure represents a tangible improvement that lessens one of the few long-standing compromises of the platform. They accept this fuel economy not because it’s class-leading, but because it’s a better balance than ever before, allowing them to go further for less without sacrificing the reliability and durability that define the 4Runner experience. It’s an acknowledgment that even the most hardcore adventurers appreciate not having to refill the tank quite as often.

City and highway performance

Looking at the 4Runner’s EPA ratings reveals a city MPG of 19 and a highway MPG of 25. The 19 MPG in city driving is a respectable figure for a body-on-frame SUV with a dedicated 4WD system, particularly one built for strong off-road duty. Compare this to the outgoing V6, and the improvement is immediately apparent. The new 2.4-liter turbocharged inline-four, paired with an 8-speed automatic transmission, works to keep the engine in its most efficient rpm range, lessening the penalty of stop-and-go traffic and the inherent inefficiencies of moving a substantial vehicle. On the highway, the 25 MPG is where the new powertrain truly shines. This allows for extended cruising ranges, a critical factor for those using their 4Runner for long-distance trips to trailheads or remote destinations. The turbocharged four-cylinder delivers strong, accessible torque, meaning the engine isn’t constantly straining, which contributes directly to its better highway performance. This 4Runner, even with its sturdy architecture and impressive ground clearance, manages to deliver highway numbers that would have been unthinkable for previous generations.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,100 for the 2025 Toyota 4Runner 4WD 2.4L 4-cyl. This figure is calculated based on an assumption of 15,000 miles driven per year, split between city and highway driving, using national average fuel prices. For the typical 4Runner owner, this translates to a tangible saving over previous models. While it’s certainly not a budget car, undercutting the annual fuel cost of many full-size trucks and larger SUVs, this $2,100 figure provides a clear benchmark. It tells prospective buyers what to realistically budget for fuel over the course of a year, assuming average driving habits and national fuel price trends. This isn’t a frivolous expense consideration for the target demographic; it’s a practical calculation for a vehicle often purchased for a blend of daily utility and serious adventurous use. Reducing that annual outlay allows more budget for aftermarket accessories, camping gear, or simply more frequent trips to those far-flung destinations the 4Runner was designed to reach.

Real-world expectations

In the real world, the 2025 4Runner 2.4L will likely consistently deliver fuel economy very close to its EPA ratings, provided it’s driven reasonably. Toyota has a strong track record of engineering powertrains that achieve their stated numbers without excessive effort from the driver. However, the 4Runner’s mission often involves conditions detrimental to efficiency. Extended periods of off-road driving, especially in low-range 4WD, will significantly impact MPG. Hauling heavy gear, towing a boat or small trailer, or encountering strong headwinds at highway speeds will naturally see a dip in efficiency. The beauty of the 2.4L turbo, however, is its torque delivery, which often means less aggressive throttle input is needed in these scenarios compared to a naturally aspirated engine. While you won’t see 25 MPG with a rooftop tent, recovery boards, and a fully loaded cooler strapped to the roof, the baseline improvement ensures that even under load, the deficit will be less severe than what older 4Runners experienced. This engine is designed to work efficiently, not just exist.

How it compares

The 2025 4Runner’s 21 MPG combined positions it well within its segment, especially when considering its specific capabilities. A Jeep Wrangler Unlimited Rubicon with its 2.0L turbo offers a combined 20 MPG, nearly identical to the 4Runner, but often with a more compromised on-road experience. The Ford Bronco’s 2.3L EcoBoost with a 10-speed auto typically manages 20 MPG combined, showing a tight race among the dedicated off-roaders. For those considering more road-biased SUVs, the difference becomes starker. A base 2024 Honda Pilot, a unibody crossover, delivers 22 MPG combined, showing the impressive efficiency of lighter, less rugged platforms. Even the larger Toyota Grand Highlander Hybrid AWD achieves 36 MPG combined, highlighting the spectrum of Toyota’s offerings. However, the 4Runner’s true comparison isn’t with crossovers, but with vehicles that can genuinely tackle challenging terrain. Its improved efficiency means it’s no longer an outlier among its adventure-oriented peers; it’s competitive, often leading the pack. This makes all Toyota fuel economy data relevant for those seeking durability.

Tips to maximize efficiency

Maintaining proper tire pressure is critical for any vehicle, but particularly for a 4WD SUV like the 4Runner. Check your tires regularly, especially before and after off-road excursions where pressures might be adjusted for different terrains. Correctly inflated tires reduce rolling resistance and contribute directly to better fuel economy.

Consider the aerodynamics of any aftermarket accessories. Rooftop tents, large light bars, and aggressive roof racks, while functional for overlanding, create significant drag, particularly at highway speeds. Remove them when not needed for your adventures to noticeably improve your MPG on daily commutes or longer road trips.

Adopt a smooth driving style. The 2.4L turbo engine provides ample torque, so there’s no need for aggressive acceleration. Anticipate traffic and brake gently to avoid unnecessary energy conversion to heat. Using the 8-speed automatic’s full range efficiently can keep the engine in its sweet spot.

Plan your routes, especially for off-road outings. Minimizing idle time, avoiding unnecessary detours, and selecting the most efficient path to your destination can conserve fuel. For a specific look, review 4RUNNER MPG across all years to understand the generational improvements.

Regular maintenance, following Toyota’s recommended schedule, ensures your engine is running optimally. Clean air filters, fresh spark plugs, and correct fluid levels all contribute to the engine’s efficiency and longevity. Neglecting these basic components can slowly but surely erode your hard-earned fuel economy.