The 2021 Lexus IS 300 2.0L turbo-four gets 25 MPG combined, a compromise that buyers accept. It’s not the most fuel-efficient compact luxury sedan, and it doesn’t try to be. Its goal is to offer Lexus refinement, sharp styling, and a rewarding driving experience in a segment where efficiency often rules. The target customer values these aspects and understands that slightly lower MPG is part of the deal.

City and highway performance

The IS 300 2.0L gets an EPA-estimated 21 MPG in the city and 31 MPG on the highway. That highway number is good, making it a comfortable and fairly economical choice for long trips. The city MPG shows that the turbo engine has to work harder in stop-and-go traffic, which affects fuel use. The eight-speed automatic transmission is generally smooth and responsive, but its programming focuses on smoothness rather than maximum efficiency, also affecting these numbers.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Lexus IS 300 2.0L at $2,300. This is based on driving 15,000 miles per year, with 45% in the city and 55% on the highway. They use national average fuel prices, so your actual cost will change depending on your driving habits and local prices. Some drivers might spend much more, and some might spend less, depending on their situation.

Real-world expectations

EPA estimates are a good starting point, but real-world fuel economy can change a lot. Driving hard, speeding up often, and idling a lot will all hurt your fuel economy. Driving mostly in the city will probably give you lower MPG than the EPA combined rating. However, drivers who drive more carefully and spend more time on the highway might meet or even beat the EPA estimates. Tire pressure, outside temperature, and even the type of gasoline can also make a small difference. Check online forums and owner reviews to see what others are getting in similar conditions.

How it compares

Some competitors offer better fuel economy in the compact luxury sedan class. For example, the BMW 330i gets an EPA-estimated combined MPG of 28, which is more than the IS 300. The Acura TLX 2.0T, while more powerful, gets a combined 25 MPG, the same as the IS. Even some all-wheel-drive competitors can get similar or slightly better economy. A comparable Audi A4 Quattro gets about 27 MPG combined. Buyers who value fuel efficiency most will care about these differences. Those seeking all all Lexus fuel economy data can compare these figures in the context of the entire brand’s lineup. Keep in mind that competitors might have better MPG, but they often have a different driving feel or interior. Looking at all IS MPG across all years can also show you model trends.

Tips to maximize efficiency

Accelerate gently to get the best fuel economy in the IS 300 2.0L. The turbocharger responds quickly to the gas pedal, but using only the power you need will save fuel. Avoid sudden starts and hard braking, and let the car coast whenever you can to keep your speed.

Regular maintenance, especially oil changes and spark plug replacement, is critical for keeping your engine running its best and getting good fuel efficiency. A well-maintained engine runs more smoothly and efficiently, saving fuel and making your engine last longer. Ignoring these things can lead to worse fuel economy and bigger mechanical problems.

Make sure your tires are inflated to the recommended pressure. Tires with low pressure increase rolling resistance, making the engine work harder and use more fuel. Check your tire pressure regularly and adjust it as needed, especially when the temperature changes. Look at the sticker on the driver’s side doorjamb for the recommended tire pressure.

Don’t idle for too long. Letting the engine idle for a long time wastes fuel. If you’re stopped for more than a minute or two, it’s usually better to turn off the engine and restart it when you’re ready. Modern engines are made to restart quickly and easily, which makes this an easy way to save fuel.

Plan your routes to avoid traffic and unnecessary stops. Using a navigation system to find the best route can help you drive fewer miles and reduce stop-and-go driving, which will help you save fuel. If possible, drive during off-peak hours to avoid traffic.