14 MPG combined isn’t going to win any awards for saving gas, but the Lexus LX 570 isn’t about that. This full-size, body-on-frame SUV is unapologetically focused on luxury, capability, and reliability, attributes that often matter more than fuel efficiency to its owners. The LX 570 is purchased by those who prioritize a quiet, comfortable ride, the ability to conquer challenging terrain, and the assurance of legendary Lexus build quality. Fuel economy is simply a cost of doing business.

City and highway performance

The EPA estimates the LX 570 achieves 12 MPG in the city and 16 MPG on the highway. These figures reflect the considerable weight of the LX, its full-time four-wheel-drive system, and the inherent inefficiencies of a naturally aspirated 5.7L V8 engine. Stop-and-go city driving forces the heavy vehicle to constantly accelerate from a standstill, placing considerable demand on the engine. On the highway, even with the eight-speed automatic transmission, aerodynamics and rolling resistance contribute to the less-than-stellar fuel consumption. These figures also highlight the trade-offs buyers make when choosing a vehicle designed for both opulent comfort and strong off-pavement performance. If fuel costs are among your primary concerns, be sure to check all Lexus fuel economy data.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2021 Lexus LX 570 is $4,150. This calculation is based on driving 15,000 miles per year and using national average fuel prices. It’s crucial to understand that this is just an estimate, and your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. Aggressive driving, frequent towing, and consistently inflated prices at the pump will significantly increase this figure. Conversely, gentle acceleration, consistent highway cruising, and diligent monitoring of fuel prices may help you stay closer to the EPA estimate. Before purchasing, review LX MPG across all years to see if prior models offer better efficiency.

Real-world expectations

While the EPA provides a standardized estimate, real-world fuel economy for the LX 570 often mirrors, or sometimes falls slightly below, those numbers. Factors such as frequent short trips, idling in traffic, and using the vehicle’s four-wheel-drive system will negatively affect fuel consumption.

However, some owners report achieving figures close to the EPA estimates on long highway journeys when maintaining consistent speeds and avoiding aggressive acceleration. Keep in mind that the LX 570’s considerable weight and powerful engine inherently contribute to higher fuel consumption, regardless of driving style.

How it compares

When compared to its direct competitors, the LX 570 occupies a specific niche. The Land Rover Range Rover, for instance, achieves a combined 18 MPG with its base engine. The Mercedes-Benz GLS 450 offers a combined 20 MPG with its inline-six powertrain. Even the Infiniti QX80, with its also-thirsty V8, manages a slightly better 15 MPG combined. This makes the LX 570 the least fuel-efficient option among its peers. However, buyers aren’t always cross-shopping.

The Lexus offers a unique blend of off-road capability, old-school reliability, and luxurious appointments that can’t necessarily be quantified by MPG alone. For some buyers, that distinction is worth paying a premium at the pump.

Tips to maximize efficiency

Avoid aggressive acceleration and braking. The LX 570’s large displacement engine is sensitive to throttle inputs. Gentle acceleration and smooth braking will help conserve fuel. Anticipate traffic flow and coast when possible.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended pressure listed on the doorjamb.

Reduce unnecessary weight. Remove any items from the vehicle that you don’t need to carry around. Extra weight puts additional strain on the engine, leading to increased fuel consumption. Remember that the LX 570 has a generous cargo area, avoid turning it into a storage unit.

Use cruise control on the highway. Cruise control helps maintain a consistent speed, which can improve fuel economy on long journeys as opposed to the accelerator constantly being pressed and released. It’s best to avoid cruise control in hilly areas, though, as the transmission may downshift frequently, reducing fuel efficiency.

Consider using a lighter fuel pedal. The LX 570’s engine is powerful but it is sensitive to the way it is used as the throttle can result in heavy or light fuel consumption. Consider easing off the gas pedal when accelerating and maintaining a steady pace to limit fuel consumption.