The 2023 BMW 330i Sedan’s 29 MPG combined fuel economy isn’t class-leading. It’s adequate and expected, but perhaps not the primary concern for buyers of this sports sedan. Fuel efficiency is a consideration, but it’s secondary to driving dynamics, brand appeal, and the technology that BMW offers.

City and highway performance

EPA estimates for the 2023 330i are 25 MPG in the city and 34 MPG on the highway. The city figure reflects urban driving’s stop-and-go conditions, where the turbocharged 2.0L four-cylinder engine idles and accelerates frequently. The highway number showcases the engine’s efficiency at a steady cruise. The 8-speed automatic transmission helps keep the engine in its optimal range, balancing performance and economy, whether driving aggressively or conservatively. The engine is strong and punchy, capable of good MPG, but driving style greatly affects the 330i’s observed fuel economy.

Annual fuel cost

The EPA estimates the 2023 BMW 330i’s annual fuel cost at $2,000. This is based on 15,000 miles per year and national average fuel prices. Premium gasoline is recommended for optimal performance, which often changes “national average fuel prices” for 330i owners. This estimate provides a benchmark, but individual spending varies depending on driving habits, location, and actual fuel prices. Consider 330I MPG across all years to get a complete picture.

Real-world expectations

EPA figures provide a baseline but real-world fuel economy often differs. The driving style of 330i owners often results in lower numbers than official estimates. Enjoying the engine’s power and responsive handling can reduce fuel economy. Greater city driving will also result in lower MPG. Long highway trips and a light foot on the accelerator will yield results closer to, or even exceeding, the EPA’s 34 MPG highway estimate. Many owners have reported gas mileage in the high 30s on long highway trips.

How it compares

In the sports sedan segment, the 330i is competitive. The Audi A4 40 TFSI has an EPA-estimated 31 MPG combined, a slightly more economical choice. The Mercedes-Benz C300’s 28 MPG combined estimate is slightly behind the 330i. The Genesis G70 2.0T, at 24 MPG combined, lags the BMW. These comparisons matter to buyers who want a sporty feel and care about their fuel bill. You can view all Bmw fuel economy data to see how BMW scores against its competitors.

Tips to maximize efficiency

One way to improve fuel economy is to use the car’s driving mode selector. “Eco Pro” mode softens throttle response and optimizes the transmission for efficiency. This might reduce the car’s sporty feel, but it can improve fuel consumption, especially in city driving.

Smooth acceleration and braking are important. Avoid aggressive starts and hard stops, which waste fuel. Anticipate traffic flow and maintain a consistent speed when possible. This is true for all vehicles but is especially relevant to the 330i, where drivers are tempted to explore the car’s power.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, reducing fuel economy. Check your tire pressures regularly and inflate them to the recommended levels, which can be found on a sticker inside the driver’s side doorjamb.

Minimize the use of accessories like air conditioning, especially on shorter trips. The air conditioning compressor loads the engine, increasing fuel consumption. Open a window or use the cabin ventilation system when appropriate.

Consider the weight you’re carrying. Excess cargo in the trunk adds weight, reducing fuel efficiency. Remove unnecessary items from your car to lighten the load and improve MPG.