22 MPG combined might sound like a middling figure for a mass-market sedan, but for the 2026 Land Rover Range Rover Sport P400 MHEV 3.0L 6-cyl, this number is a strong selling point. This vehicle is not just another luxury SUV; it makes a statement. It asserts capability, comfort, and understated British elegance, and its owners understand that this figure represents a highly intelligent balance. This vehicle is for the doctor or lawyer who appreciates fine things, demands excellent on-road manners for their daily commute, and then, on weekends, heads to a remote cabin or to watch their child’s equestrian event, needing genuine, uncompromised all-terrain prowess. They’re not cross-shopping against a Prius; they expect a certain level of fuel consumption for a vehicle that can traverse a muddy field with the same composure it handles a valet line.

City and highway performance

Looking at the EPA ratings, the P400 MHEV’s 20 MPG in the city and 25 MPG on the highway paint a clearer picture of its operational character. The urban cycle’s 20 MPG is particularly notable for a vehicle of this size and weight. The mild-hybrid system, with its integrated starter-generator and 48-volt battery, plays a critical role here, smoothly assisting the engine during acceleration and allowing for more efficient stop-start cycles, often regenerating energy that would otherwise be lost. This system subtly enhances low-speed efficiency without intruding on the refined driving experience. Highway cruising at 25 MPG shows the effectiveness of the 3.0L inline-six engine, part of the Ingenium family, which is designed for sustained efficiency. The smooth-shifting 8-speed automatic transmission helps, keeping engine RPMs low at cruising speeds, extracting every possible mile from each gallon. This combination ensures that long-distance journeys are not only supremely comfortable but also as economical as one could reasonably expect from a premium SUV capable of towing thousands of pounds and conquering challenging terrain.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,650 for the 2026 Land Rover Range Rover Sport P400 MHEV. This figure is based on an assumption of 15,000 miles driven annually, with a 45% city and 55% highway driving mix, using national average fuel prices. For the typical Range Rover Sport owner, this isn’t likely to be a prohibitive sum. This demographic often views fuel as a necessary operational expense, much like insurance or maintenance, rather than a primary decision driver for their vehicle purchase. They appreciate knowing the approximate cost, of course, but it’s unlikely to dissuade them from owning a vehicle that so perfectly aligns with their lifestyle and demands. The $2,650 figure provides a benchmark, allowing owners to budget accurately for their transport needs without significant surprises.

Real-world expectations

In real-world driving, owners of the P400 MHEV can generally expect to hover very close to the EPA’s combined 22 MPG figure, perhaps even exceeding it with mindful driving. The mild-hybrid system is genuinely effective in diverse conditions, and the engine’s linear power delivery discourages heavy-footed acceleration, which is often a major fuel consumption culprit. Driving dynamics play a significant role here; the Range Rover Sport encourages a smooth, unhurried pace, even when delivering brisk acceleration. Those who frequently use the generous 395 horsepower will naturally see their figures dip, particularly if their driving involves aggressive city commutes or sustained high speeds. Conversely, a driver who spends more time cruising on highways, using adaptive cruise control and anticipating traffic, could easily see numbers in the upper 20s. Towing, as with any vehicle, will significantly impact fuel economy, dropping figures into the mid-teens depending on the load and terrain. However, the Range Rover Sport’s capabilities are such that its owners understand and accept these trade-offs as part of the vehicle’s overall talent set.

How it compares

To understand the P400 MHEV’s fuel economy in context, we look at key rivals. The BMW X5 xDrive40i, for instance, a direct competitor in the luxury mid-size SUV segment, also uses a 3.0L inline-six with mild-hybrid assistance and delivers an EPA-rated 23 MPG combined (21 City/27 Highway). This is a very close match, indicating Land Rover is competitive within the segment’s best-performing gas powertrains. The Mercedes-Benz GLE 450 4MATIC achieves 22 MPG combined (20 City/26 Highway), again positioning the Range Rover Sport squarely in the mix. An outlier like the Porsche Cayenne Base, with its 3.0L V6, typically comes in lower at 20 MPG combined (18 City/23 Highway), highlighting the efficiency advantage of the mild-hybrid systems in its competitors. While plug-in hybrid rivals like the Range Rover Sport P440e offer substantially higher MPGe figures (often 51 MPGe combined), their gasoline-only combined MPG drops to 20, making the P400 a strong option for those who aren’t regularly plugging in. The buyer considering the Range Rover Sport often prioritizes the overall driving experience, brand cachet, and off-road capability, and seeing that its fuel economy is on par with leading German rivals reinforces their decision that they are not sacrificing efficiency for these other qualities. For specific information on all Land Rover fuel economy data, our site has extensive resources, including specific details on ROVER MPG across all years.

Tips to maximize efficiency

Using the P400 MHEV’s mild-hybrid system effectively is key to optimizing fuel economy. Smooth, progressive acceleration, allowing the electric motor to assist without excessive engine strain, can significantly improve urban MPG. Drive in the “Comfort” or “Eco” drive modes, which recalibrate throttle response and transmission shifts for maximum efficiency, further contributing to better numbers in daily commuting and longer trips.

Maintaining proper tire pressure is a simple yet often overlooked efficiency booster. Ensure your tires are inflated to the manufacturer’s recommended specifications, as underinflated tires increase rolling resistance and force the engine to work harder. This not only saves fuel but also extends tire life and improves handling.

Anticipate traffic conditions and coast where possible, allowing the regenerative braking system to recover energy back into the 48-volt battery. Rather than abrupt braking, a gradual deceleration maximizes the efficiency of the mild-hybrid system and reduces wear and tear on your conventional brakes.

Regular maintenance, following Land Rover’s recommended service schedule, ensures the powertrain components are operating at their peak. Clean air filters, fresh engine oil, and properly functioning spark plugs all contribute to optimal engine efficiency, ensuring your 3.0L inline-six is always performing its best.

Avoid carrying unnecessary weight in the vehicle. While the Range Rover Sport is built to carry substantial loads, even small amounts of extra cargo add up and require more energy to move, particularly in stop-and-go city driving. Remove roof racks when not in use, as they create aerodynamic drag, disproportionately impacting highway fuel economy.