16 MPG combined for the 2025 Land Rover Defender 90 with the 5.0L supercharged V8 is a bold statement. This isn’t a vehicle for those looking to save every penny. It is for the enthusiast who understands that nearly 520 horsepower through a strong off-road chassis, in a vehicle that encourages mountain climbing or outrunning other vehicles on the highway, comes with a corresponding thirst. The Defender 90 V8, especially in its two-door form, offers a concentrated dose of Land Rover’s heritage, updated with unapologetic performance. It’s for the buyer who values the immediate surge of a supercharged engine, the distinctive rumble, and the sheer capability it represents, far more than the incremental savings at the pump. They buy it to experience something unique, something only a V8 Defender can deliver, embracing the fuel economy as part of the price of admission to a very exclusive club.

City and highway performance

Breaking down the EPA figures further, the 2025 Land Rover Defender 90 V8 shows 15 MPG in city driving and 19 MPG on the highway. In city conditions, the Defender’s weight, the frequent accelerations needed to keep up with traffic, and the sheer amount of power under the hood mean that 15 MPG is a predictable outcome. The automatic (S8) transmission is expertly tuned, but even the best gearboxes can’t defy physics when moving nearly three tons of raw utility and luxury. On the highway, where the Defender can settle into a groove, the 19 MPG figure is achievable, but requires a disciplined right foot. This is not a vehicle designed solely for aerodynamic efficiency, its boxy, purposeful silhouette, while iconic, creates drag. The highway number is respectable for a vehicle of this class and power output, allowing for reasonable cruising ranges between refills, especially when compared to its city performance. Drivers typically find that maintaining a steady speed on open stretches of road will net them figures close to, and sometimes even slightly above, the EPA highway estimate, but any spirited driving or frequent passing will quickly dip that number.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,600 for the 2025 Land Rover Defender 90 V8. This figure is calculated based on driving 15,000 miles per year, with 45% of that mileage in city conditions and 55% on the highway, using national average fuel prices. For a vehicle with a combined 16 MPG, this cost is a direct reflection of its consumption. It’s a substantial figure that prospective owners should acknowledge upfront. This isn’t a hidden expense, it’s a known quantity for a vehicle that prioritizes performance and capability. The buyer of a Defender 90 with the supercharged V8 understands that this level of power and prestige comes with a corresponding operational cost. They are often individuals who factor such expenses into a broader lifestyle budget, where the vehicle’s unique attributes outweigh the routine expense of premium fuel. For Land Rover fuel economy data, and information pertaining to the entire lineup, you can explore the data available on our site. Many owners report that while they appreciate the power, they are also cognizant of the fuel gauge, especially on longer trips off the beaten path where fuel stops may be less frequent and fuel prices higher.

Real-world expectations

In the real world, the 2025 Land Rover Defender 90 V8 delivers fuel economy that is largely consistent with its EPA ratings, provided the driver exercises some restraint. However, the temptation of 518 horsepower is strong, and drivers who frequently use that immense power will inevitably see figures closer to, or even below, the city estimate, regardless of the driving environment. The character of the V8 engine, with its immediate torque and distinctive exhaust note, actively encourages spirited driving, which is the primary reason many buyers choose this powertrain. Owners tend to be those who undertake adventurous hobbies, frequent off-road trails, or simply enjoy assertive driving. They appreciate the Defender’s ability to cruise effortlessly at highway speeds, conquer challenging terrain without breaking a sweat, and accelerate with surprising vigor for such a strong platform. This isn’t a commuter car, it’s a lifestyle vehicle. Therefore, the real-world fuel economy is viewed not as a negative, but as an expected byproduct of its purpose and performance. The joy of a quick overtake, the confidence for a steep climb, or the sheer auditory experience often supersedes the desire for maximum MPGs.

How it compares

When placed alongside its peers, the 2025 Land Rover Defender 90 V8’s 16 MPG combined stands out, but not always in a way that prioritizes efficiency. Consider the Jeep Wrangler Rubicon 392, another V8-powered, off-road focused two-door. The Wrangler 392 also records 14 MPG combined (13 city/17 highway), making the Defender slightly more efficient, though still firmly in the “thirsty” category. For those considering luxury performance SUVs, the comparison shifts. A Porsche Cayenne Turbo, for instance, might net around 17 MPG combined, but in a significantly different dynamic package. Even within the Land Rover family, the two-door Defender 90 with the inline-six mild-hybrid engine achieves 20 MPG combined (P400 trim), a substantial improvement, but without the V8’s raw character and sound. Buyers of the Defender 90 V8 aren’t cross-shopping it with a hybrid RAV4. They are carefully weighing its unique blend of heritage, off-road prowess, compact dimensions, and sheer power against a very select group of vehicles. The ROVER MPG across all years shows a range of efficiency, but this particular Defender variant is a clear outlier, emphasizing performance over prudence. The Defender V8 buyer is making a deliberate choice, they want the absolute top-tier performance and sound available in a Defender, and they understand what that means for fuel consumption.

Tips to maximize efficiency

While the Defender 90 V8 isn’t designed for hypermiling, there are still ways to optimize what you get from each tank. Practicing smooth acceleration and deceleration will make a noticeable difference, the supercharged V8 is eager to rev, but gentle inputs prevent unnecessary fuel dumps.

Maintaining proper tire pressure is crucial for any vehicle, but especially for heavier SUVs like the Defender. Correctly inflated tires reduce rolling resistance, which can contribute to better fuel economy and also enhance safety and tire longevity.

Avoiding excessive idling is another simple but effective tip. The V8 consumes a significant amount of fuel even when stationary, so if you anticipate being stopped for more than a minute, it’s often more efficient to shut the engine off.

Remove any unnecessary weight from the vehicle, especially if you have heavy gear stowed for off-road adventures that aren’t currently being undertaken. Reducing the load the V8 has to move will inherently improve efficiency.

Finally, plan your routes to minimize stop-and-go traffic. The Defender V8 performs its best, from an efficiency standpoint, on open roads where it can maintain a consistent speed, rather than slogging through congested urban environments.