24 MPG combined in the 2018 Lexus ES 350 is not a headline figure, nor is it meant to be. This is a comfortable, spacious, and reliably built sedan designed for a buyer prioritizing a smooth ride and a quiet cabin over outright efficiency. The ES 350 delivers that comfort and quiet, and its fuel consumption is simply a price some drivers are perfectly willing to pay. The V6 engine offers confident acceleration while the suspension absorbs bumps and road imperfections with grace, qualities that many ES buyers value more than squeezing every last drop out of a gallon of fuel.

City and highway performance

The EPA estimates for the 2018 Lexus ES 350 place city driving at 21 MPG and highway cruising at 30 MPG. These numbers reflect the characteristics of the 3.5L V6 engine and the six-speed automatic transmission. In city driving, the engine’s relatively large displacement means it requires more fuel to accelerate from stops and navigate traffic. The six-speed transmission, while smooth, lacks the extra gears found in more modern designs, which can help optimize fuel economy at lower speeds. On the highway, the ES 350 fares better thanks to its aerodynamic shape and the engine settling into a more efficient cruising speed. 30 MPG is respectable, but it also points to the fact that this is an older powertrain design; newer engines with more advanced transmissions often deliver superior highway fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Lexus ES 350 at $1,800. This figure is calculated based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. The calculation also uses the national average fuel price at the time of estimation. This $1,800 figure provides a useful benchmark, but keep in mind that your actual fuel costs may vary depending on your driving habits, the type of driving you do, and local fuel prices. So make sure to consider all Lexus fuel economy data and the ES MPG across all years.

Real-world expectations

While the EPA estimates provide a standardized measure of fuel economy, real-world results can vary. Many 2018 Lexus ES 350 drivers report achieving numbers close to the EPA estimates, particularly on long highway trips where the car can consistently cruise at an efficient speed. However, aggressive driving, frequent short trips, and stop-and-go traffic will undoubtedly reduce fuel economy. Colder temperatures can slightly decrease MPG, as can the use of air conditioning, so keep that in mind depending on your climate and driving style.

How it compares

Compared to its competitors, the 2018 Lexus ES 350’s fuel economy is squarely in the middle of the pack. The Acura TLX with its 3.5L V6 engine achieves a slightly better 23/32 MPG city/highway, reflecting improvements in engine and transmission technology. The Toyota Avalon, which shares a similar platform and engine, also achieves a slightly better combined MPG number. The Buick LaCrosse with its available 3.6L V6 delivers similar fuel economy numbers to the ES 350. These differences highlight the Lexus’ focus on comfort and refinement over outright fuel efficiency. Buyers considering an ES 350 are likely cross-shopping these vehicles, and each tenth of an MPG could be a factor in their decision.

Tips to maximize efficiency

Gentle acceleration and braking can significantly improve fuel economy in the ES 350. The 3.5L V6 engine delivers plenty of power, but using it carefully, especially in city driving, will help conserve fuel. Avoid aggressive starts from stoplights and anticipate traffic flow to minimize hard braking.

Maintaining proper tire inflation is another simple way to boost fuel economy. Check your tire pressure regularly and inflate your tires to the manufacturer’s recommended pressure. Underinflated tires create more rolling resistance, which reduces fuel efficiency.

Reduce unnecessary weight in the vehicle. Carrying around extra weight in the trunk or backseat puts more strain on the engine, decreasing fuel economy. Remove any items that you don’t need to carry on a regular basis.

Combining trips can help you save fuel. Short trips, especially when the engine is cold, consume more fuel than longer trips where the engine has had time to warm up. Plan your errands strategically to minimize the number of short trips you take.

Consider using the car’s “Eco” driving mode, if equipped. This mode adjusts the engine and transmission settings to prioritize fuel efficiency over performance. It may slightly reduce throttle response, but it can help you save gas, especially in city driving.