32 MPG combined in the 2017 Honda Civic Si isn’t going to blow anyone away, but it’s an acceptable figure for a car so focused on delivering affordable performance and driver engagement. No one buys an Si expecting Prius-like fuel sipping. They buy it for the crisp six-speed manual, the playful chassis, and the punchy turbocharged engine and are willing to live with decent, not exceptional, economy in return.

City and highway performance

The EPA estimates for the 2017 Civic Si’s fuel economy break down to 28 MPG in the city and 38 MPG on the highway. That highway number demonstrates the efficiency potential of the 1.5-liter turbocharged engine when cruising. However, achieving the city figure will require some restraint, as the temptation to dip into the turbo’s boost will almost certainly impact fuel consumption. The eager responsiveness that makes the Si so entertaining also makes it a bit of a gas guzzler in stop-and-go traffic if you’re not mindful.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2017 Honda Civic Si at $1,800. This figure is based on driving 15,000 miles per year, assuming a national average fuel price. Individual fuel costs will vary depending on local gas prices and personal driving habits. Someone who primarily drives short distances in the city will likely exceed this estimate, while someone who does mostly highway miles might come in under budget. It’s a useful yardstick, but not a perfect predictor of your actual spending.

Real-world expectations

While the EPA figures provide a baseline, real-world MPG for the 2017 Civic Si will largely depend on driving style. Those with a lead foot will see numbers closer to the low 20s, especially in city driving. Conversely, hypermilers who embrace gentle acceleration and anticipatory braking can likely exceed the EPA estimates, possibly pushing into the low 40s on the highway. The Si rewards both spirited driving and mindful efficiency, offering a broad spectrum of experience.

How it compares

Compared to its competitors, the 2017 Honda Civic Si holds its own in fuel economy. The Ford Focus ST, another popular hot hatchback from that era, managed about 25 MPG combined. The Volkswagen GTI, in its base trim with manual transmission, could achieve a slightly better 28 MPG combined. The Subaru WRX, while offering standard all-wheel drive, only managed 23 MPG combined. These differences may not be deal-breakers for performance enthusiasts, but the Civic Si offers a modest advantage in fuel efficiency without sacrificing much in driving fun. For a broader view, check out CIVIC MPG across all years.

Tips to maximize efficiency

The Civic Si’s turbocharged engine is responsive to driving habits. Avoid aggressive acceleration and hard braking, especially in city driving, to conserve fuel.

Anticipate traffic flow and coast whenever possible to minimize fuel consumption. The eager nature of the car can quickly turn into wasted fuel if you aren’t careful. Ensure the tires are properly inflated to the recommended pressure listed on the driver’s side doorjamb. Underinflated tires increase rolling resistance, which reduces fuel economy. Regularly checking and maintaining proper tire pressure is a simple yet effective way to improve MPG.

Minimize excessive idling. If you’re stopped for more than a minute, consider turning off the engine. Modern engines are designed to restart quickly and efficiently, so restarting is more fuel-efficient than idling for extended periods.

Use cruise control on the highway to maintain a consistent speed and avoid unnecessary acceleration and deceleration. This will not only improve fuel economy but also reduce driver fatigue on long trips, but be aware of the terrain and adjust your speed accordingly to maintain efficiency.

Keep the car properly maintained. Regular oil changes, air filter replacements, and spark plug maintenance can all contribute to optimal engine performance and fuel efficiency. Over time, neglected maintenance can gradually decrease MPG. Comparing all Honda fuel economy data, you’ll find that consistent maintenance is key to achieving optimal MPG.