28 MPG Combined. That figure, while not earth-shattering, represents a key part of the 2015 Chevrolet Sonic 5 RS’s appeal. This isn’t a hybrid, and it doesn’t pretend to be. Instead, the Sonic RS delivers a palatable blend of fuel efficiency and hatchback practicality, aimed squarely at buyers who are conscious of budget and still want a dash of sporty styling and a relatively engaging driving experience.

City and highway performance

The EPA estimates the 2015 Chevrolet Sonic 5 RS at 25 MPG in the city and 33 MPG on the highway. The city figure reflects stop-and-go traffic, where the 1.4L turbocharged engine and six-speed automatic transmission work hardest. The engine’s modest power output means you’ll likely be using a heavier foot to keep up with traffic, particularly if the car is loaded with passengers or cargo. The highway rating is more achievable, thanks to the transmission’s ability to cruise in sixth gear at relatively low RPMs. Long road trips, therefore, can showcase the Sonic 5 RS’s best fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Chevrolet Sonic 5 RS at $1,550. This calculation assumes 15,000 miles driven per year, with fuel prices based on the national average for regular unleaded gasoline at the time of testing. Your actual fuel costs will vary depending on your driving habits, the type of driving you do, and local fuel prices. Someone who drives primarily on the highway will likely spend less, while someone stuck in stop-and-go traffic every day will probably spend more.

Real-world expectations

The official EPA numbers provide a useful baseline, but real-world fuel economy can often differ. Owners of the 2015 Sonic 5 RS report figures that are either slightly above or below the EPA estimates frequently. Factors such as driving style, tire pressure, vehicle maintenance, and even the weather can all impact your MPG. Careful and consistent monitoring of your fuel consumption will reveal exactly what you should expect from your Sonic RS in your specific driving conditions.

Some users drive with extreme efficiency in mind, called hypermiling, and see higher numbers. Others drive aggressively, and see lower returns. As always, your milage is likely to vary.

How it compares

In the world of subcompact hatchbacks, the 2015 Chevrolet Sonic 5 RS faces strong competition. Consider the Honda Fit, known for its exceptional interior space and fuel efficiency. The Honda Fit consistently achieves around 32 MPG combined in real-world testing, giving it an advantage. The Ford Fiesta, depending on the engine option, could achieve similar, sometimes better, fuel economy. Its smaller 1.0L EcoBoost offered up to 36 MPG on the highway in some trims. Those considering the Sonic 5 RS also might compare it to the Nissan Versa Note, which prioritizes fuel efficiency and affordability. At a similar price point, it returns a combined MPG of 31. These alternatives appeal to buyers who prioritize MPG figures. The Sonic RS stands apart with a sportier aesthetic and handling qualities, a trade-off some buyers willingly make.

Tips to maximize efficiency

Optimize your tire pressure. The correct tire pressure minimizes rolling resistance, allowing the engine to work less hard to maintain speed. Check your tires regularly and ensure they are inflated to the recommended pressure indicated on the door jamb sticker. Even a few PSI below the recommended level can negatively impact fuel economy.

Drive smoothly and avoid aggressive acceleration. The turbocharged engine in the Sonic RS is responsive, but using excessive throttle will quickly diminish your MPG. Anticipate traffic flow and gradually accelerate and decelerate to maintain momentum. Every hard acceleration burns extra fuel that is unnecessary.

Minimize idling. If you’re stopped for more than a minute or two, turn off the engine. Idling consumes fuel without covering any distance. This is especially important during cold weather, as the engine consumes extra fuel to maintain optimal operating temperature. Idling is hard on an engine, so shut if off.

Reduce weight. Carrying unnecessary items in your vehicle adds weight, which increases fuel consumption. Remove any items you don’t need, such as extra cargo or unused roof racks. A lighter vehicle can also see slightly improved acceleration and braking performance. It all adds up!

Use cruise control on the highway. Maintaining a consistent speed on the highway helps minimize fuel consumption. Cruise control can help you maintain a steady pace and avoid sudden speed changes. But be mindful to avoid using cruise control in hilly areas, where the system will constantly change throttle position to maintain speed. Consider browsing all Chevrolet fuel economy data for more insights, and specifically SONIC MPG across all years.