19 MPG combined is the fuel economy for the 2021 Land Rover Defender 90 MHEV with the 3.0L inline-six, a figure that won’t deter its core buyers. This isn’t a vehicle purchased for maximizing trips between fill-ups; it’s a statement, a lifestyle choice, an embrace of capability and iconic design over outright efficiency. The Defender 90 buyer prioritizes ruggedness, off-road prowess, and distinctive style and understands that those traits come at a cost, both financial and in terms of fuel consumption.

City and highway performance

The EPA estimates the Defender 90 3.0L MHEV at 17 MPG in the city and 22 MPG on the highway. The city figure reflects the demands of stop-and-go traffic, where the Defender’s weight and inherently less efficient design affect mileage. The highway number, while better, still lags behind many competitors because of the Defender’s less aerodynamic shape and full-time four-wheel-drive system. The MHEV (mild hybrid electric vehicle) system provides some electrical assist, allowing the engine to shut off at stops to help increase city MPG slightly and to provide smooth transitions during stop/start operation.

Annual fuel cost

Operating the 2021 Land Rover Defender 90 MHEV won’t be cheap. The EPA estimates an annual fuel cost of $3,050. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, and using national average fuel prices. Keep in mind that premium fuel is recommended for this engine, so expect that cost to be at least that high, if not higher depending on local fuel prices.

Real-world expectations

While the EPA estimates provide a benchmark, your actual fuel economy will vary depending on your driving habits, terrain, and cargo load. Frequent off-roading, aggressive acceleration, and carrying heavy loads will all negatively impact fuel consumption. However, gentle acceleration and consistent highway speeds may yield slightly better results than the EPA estimates, but realistically, owners should expect to see numbers close to or even below the official ratings in typical driving conditions. A heavy foot or extensive idling, as can occur when using the Defender for overlanding, will quickly erode fuel economy.

How it compares

Compared to other SUVs with similar off-road capabilities, the Defender’s fuel economy lands in a specific spot. The Jeep Wrangler Unlimited with the 2.0L Turbo engine manages around 22 MPG combined, presenting a more efficient option for those focused on off-road adventures. The Toyota 4Runner, a long-standing competitor, achieves about 17 MPG combined, making the Defender a slightly more efficient choice. Even within all Land fuel economy data, other models fare differently. A Range Rover Sport with the comparable 3.0L inline-six often shows slightly better figures, around 21 MPG combined, due to its more aerodynamic design and focus on on-road performance. These comparisons are important because they highlight the trade-offs inherent in choosing a vehicle with the Defender’s specific design and capabilities.

Tips to maximize efficiency

Maintaining proper tire inflation significantly impacts fuel economy. The Defender’s tires are designed for off-road use, but running them at the correct pressure for on-road driving reduces rolling resistance and improves efficiency. Check your tire pressure regularly and adjust accordingly to the manufacturer’s recommendations.

Avoid aggressive acceleration and braking. The Defender 90, while offering impressive performance, consumes more fuel when driven hard. Smooth, predictable driving habits reduce fuel consumption and improve overall efficiency. Anticipate traffic flow and maintain a steady speed whenever possible.

Minimize idling. Excessive idling wastes fuel and results in lower MPG. If you anticipate being stationary for more than a minute, turn off the engine. The Defender’s MHEV system helps with this, but actively shutting off the engine in prolonged idle situations further conserves fuel.

Consider your cargo. Carrying unnecessary weight on the roof rack or inside the vehicle will negatively impact fuel economy. Remove any unnecessary items and streamline your cargo to reduce the load on the engine. Aerodynamic drag from roof racks is also a factor, particularly at higher speeds.