18 MPG combined makes the 2026 Range Rover SV MHEV 4.4L 8-cyl a vehicle whose owners understand and accept the energetic cost of its blend of luxury, capability, and performance. This isn’t a family hauler designed to sip fuel on the school run, nor is it striving to redefine efficiency in the luxury SUV segment. The Range Rover SV, in this powerful specification, is for the buyer who prioritizes exceptional refinement, formidable power delivery, and an interior experience that borders on bespoke. Fuel economy, while acknowledged, is a secondary consideration to the breadth of its capabilities and the prestige it inherently commands. The MHEV (Mild Hybrid Electric Vehicle) designation here serves more to smooth power delivery and slightly improve low-end response than to dramatically alter the vehicle’s fundamental consumption profile.

City and highway performance

The EPA rates the 2026 Range Rover SV MHEV 4.4L 8-cyl at 16 MPG in the city and 23 MPG on the highway. In city driving, the 4.4L twin-turbocharged V8, paired with the smooth Automatic (S8) transmission, delivers effortless acceleration. This urban figure reflects the vehicle’s substantial curb weight, the inherent demands of stop-and-go traffic, and the power ready at the driver’s command. The mild hybrid system offers subtle assistance during initial acceleration and can allow for engine shut-off at idle, contributing marginally to this figure. On the open road, where the V8 can stretch its legs and the adaptive cruise control can maintain consistent speeds, the 23 MPG highway rating becomes more attainable. The refined power delivery and insulated cabin make long-distance journeys remarkably comfortable, and the Range Rover SV is engineered to consume fuel efficiently relative to its output when cruising at highway speeds, not when asked to repeatedly accelerate its considerable mass from a standstill. For all Land Rover fuel economy data, you can visit our dedicated section.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,200 for the 2026 Range Rover SV MHEV 4.4L 8-cyl. This figure is derived from an assumption of driving 15,000 miles per year, split between city and highway driving, and using national average fuel prices. For the typical Range Rover SV buyer, this $3,200 annual outlay is a negligible sum compared to the vehicle’s purchase price and ongoing maintenance. It’s an accepted part of ownership for a vehicle that offers such a unique combination of luxury, performance, and capability. Buyers upgrading to this top-tier SV model understand that they are investing in an experience, not prioritizing frugal operational costs. The price of fuel, while always a factor, is rarely the decisive one for this demographic.

Real-world expectations

Achieving the EPA’s 18 MPG combined rating in the 2026 Range Rover SV MHEV 4.4L 8-cyl depends heavily on driving style and conditions. Our experience indicates that spirited driving, which the powerful 4.4L V8 encourages, will quickly push consumption into the mid-teens. Conversely, sustained highway cruising with judicious use of the accelerator can yield figures closer to, or even slightly exceeding, the 23 MPG highway rating. Regular use of the vehicle’s various off-road modes, which often involve lower speeds and higher engine loads, will also impact real-world consumption downwards. Owners of the SV rarely purchase it with the intent of hypermiling; they expect abundant power on demand and a driving experience that reflects the vehicle’s premium positioning. The strong eight-cylinder engine and the SUV’s significant proportions inherently mean a certain level of fuel consumption, and those who own one embrace that reality as part of the Range Rover SV package. For more about ROVER MPG across all years, explore our comprehensive guide.

How it compares

When placed alongside its direct competitors, the 2026 Range Rover SV MHEV 4.4L 8-cyl’s 18 MPG combined figure is competitive within this elite segment of ultra-luxury performance SUVs. Consider the Bentley Bentayga Azure V8, which typically achieves around 17 MPG combined, due to its similarly powerful 4.0L twin-turbo V8. The Mercedes-Benz GLS 600 Maybach, another direct rival focusing on ultimate luxury, often hovers around 17-18 MPG combined from its 4.0L biturbo V8. Even the more performance-oriented BMW X7 M60i, with its 4.4L twin-turbo V8, manages a combined 18 MPG. These comparisons highlight that the Range Rover SV’s fuel economy is par for the course among vehicles offering similar levels of power, luxury, and all-terrain capability. Buyers in this segment are cross-shopping for prestige, interior appointments, and driving dynamics, where fuel efficiency is a known and accepted compromise for the power and presence offered. No one is buying a 600-horsepower SUV expecting Prius-level economy.

Tips to maximize efficiency

While fuel efficiency isn’t the primary motivator for Range Rover SV ownership, there are still ways to optimize consumption from the potent 4.4L V8. Activating the “Eco” driving mode, for instance, subtly adjusts throttle response and transmission shift points, encouraging smoother, more fuel-conscious driving without feeling sluggish. This mode is particularly useful in urban environments where heavy-footed acceleration is rarely necessary.

Maintaining proper tire pressure is important for any vehicle, but especially for a large, heavy SUV like the Range Rover SV. Correctly inflated tires reduce rolling resistance, which directly translates to less work for the engine and, consequently, better fuel economy. Check your tire pressure regularly, especially before long journeys.

Use the smooth power delivery of the MHEV system. Gentle acceleration from a stop and anticipating traffic flow can make a noticeable difference. The mild hybrid’s ability to assist in initial acceleration means you don’t have to lean as hard on the V8, preserving precious fuel.

Plan your routes in advance to avoid unnecessary idling or excessive stop-and-go traffic. The Range Rover SV’s large V8 consumes a significant amount of fuel when idling, and prolonged periods of standing still at red lights or in gridlock will diminish your overall efficiency.

Finally, use cruise control on highways. Maintaining a consistent speed prevents the engine from constantly adjusting, which can lead to inefficient fuel consumption. The adaptive cruise control system in the SV is particularly adept at this, smoothly maintaining distance and speed without aggressive acceleration or braking.