21 MPG combined isn’t going to win any fuel-sipping awards, but for the 2019 Lexus IS 350 AWD with its strong 3.5L V6, it’s a compromise many owners accept. This isn’t a car bought for hypermiling; it’s a compact luxury sedan purchased for its blend of styling, engaging driving, and the sure-footedness of all-wheel drive. The target demographic prioritizes a rewarding driving experience over squeezing every last mile from a gallon of premium fuel.

City and highway performance

The EPA estimates 19 MPG in the city and 26 MPG on the highway. The city figure reflects stop-and-go traffic and the engine’s eagerness to rev. The six-speed automatic transmission, while smooth and responsive, isn’t the most modern design for maximizing efficiency. On the open road, however, the IS 350 AWD settles into a relaxed rhythm, allowing the V6 to cruise efficiently at highway speeds. The all-wheel-drive system adds some weight and drivetrain loss, contributing to the lower fuel economy compared to the rear-wheel-drive version.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2019 Lexus IS 350 AWD is $2,750. This figure is based on driving 15,000 miles per year and using the national average fuel price for premium gasoline, which Lexus recommends. Depending on your driving habits and local fuel prices, your actual costs may vary. However, the $2,750 provides a useful benchmark for comparing the IS 350 AWD’s fuel expenses to other vehicles in its class, and helps paint a clearer picture when looking at all Lexus fuel economy data.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy often differs. Aggressive driving, frequent short trips, and prolonged idling can all negatively impact fuel consumption. Conversely, gentle acceleration, consistent highway speeds, and proper maintenance can help you achieve figures closer to the EPA estimates, or even slightly exceed them. Checking online owner forums dedicated to the IS 350 can yield data about what others are experiencing, though individual results will vary. If you are curious about IS MPG across all years, you can find a lot of data online.

How it compares

The IS 350 AWD’s fuel economy lags behind some of its competitors. For example, the BMW 330i xDrive, with its turbocharged four-cylinder engine, achieves a combined EPA rating of 28 MPG. The Acura TLX SH-AWD with the V6 engine, also gets slightly better fuel economy ratings in comparison. Even the Audi A4 quattro manages better MPG numbers. These alternatives offer similar levels of luxury and performance, but prioritize fuel efficiency more. For buyers heavily focused on MPG, these differences matter, but the IS 350 loyalists are often drawn to its V6 engine smoothness and Lexus reliability.

Tips to maximize efficiency

Minimize aggressive acceleration and hard braking. The IS 350’s V6 is responsive, but rapid acceleration burns fuel quickly. Anticipate traffic flow and maintain a steady pace whenever possible. Use cruise control on the highway to maintain a consistent speed and optimize fuel consumption.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended levels listed on the driver’s side doorjamb.

Reduce unnecessary weight. Carrying extra cargo in the trunk or backseat adds weight to the vehicle, which increases fuel consumption. Remove any items that you don’t need to carry regularly to optimize fuel efficiency.

Keep up with scheduled maintenance. Regular oil changes, air filter replacements, and other maintenance tasks help ensure that your engine is running efficiently. Follow the recommended maintenance schedule in your owner’s manual.

Consider using the “Eco” driving mode if your circumstances allow. This mode will slightly reduce throttle response and adjust shift patterns for greater fuel economy. Keep in mind it is important to also use the other modes to make sure everything is as it should be!