BMW · 2019
M240i Convertible 3.0L 6-cyl
✓ EPA Verified
Premium Gasoline
Subcompact Cars
Rear-Wheel Drive
City
21
MPG
Combined
24
MPG
Highway
30
MPG
Annual Fuel Cost
$2,400
Based on 15,000 miles/year · EPA estimates
vs avg gas vehicle
$250
more per year
Class Comparison — Subcompact Cars
Bottom 48%
Better than 48 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 24 MPG
This vehicle
24 MPG
Class average
27 MPG
Class lowest
12 MPG
EPA Energy & Environment Scores
5
Energy Score
Out of 10
5
GHG Score
Out of 10
367 lbs
Annual CO₂
g/mile tailpipe CO₂
Yes
Start-Stop
Auto stop-start
Vehicle Specifications
Engine3.0L 6-cyl
TransmissionAutomatic (S8)
DriveRear-Wheel Drive
Fuel TypePremium Gasoline
Vehicle ClassSubcompact Cars
Engine DescSIDI
Start-StopYes
EPA Vehicle ID40447

The 2019 BMW M240i Convertible with its 3.0L inline-six and automatic transmission gets 24 MPG combined. It isn’t an economy car. It’s a compact, rear-wheel-drive convertible built for driving pleasure, and the M240i hints at the performance. Fuel economy is less important for buyers who want its engaging chassis and potent engine.

City and highway performance

The EPA estimates for the M240i Convertible are 21 MPG in the city and 30 MPG on the highway. Stop-and-go driving reduces fuel economy, while steady cruising is more efficient. You might get 30 MPG on the highway, but this takes a light foot. Achieving the city figure requires even more discipline, as the engine is eager to rev. If you’re constantly using the power, expect lower numbers.

Annual fuel cost

The EPA estimates that the average owner of a 2019 BMW M240i Convertible will spend $2,400 on fuel annually. This is based on driving 15,000 miles per year and using national average fuel prices. Your individual fuel costs will vary depending on your driving habits, local fuel prices, and the type of fuel you use. The M240i doesn’t technically require premium fuel, but BMW recommends it for best performance. Using regular unleaded may slightly decrease performance and potentially fuel economy, you should consider that in your budget.

Real-world expectations

Real-world fuel economy for the M240i Convertible often is a bit below the EPA estimates, especially for drivers who like to use the engine’s power. Owners commonly report figures in the low 20s, reflecting a mix of city and spirited highway driving. Don’t expect Prius-like numbers. This is a performance car, and driving it hard will reduce fuel consumption. A relaxed driving style, focusing on smooth acceleration and anticipating traffic, can get you closer to the EPA numbers, but you’ll need self control.

How it compares

The 2019 M240i is decent compared to other sporty convertibles, but not particularly outstanding. The Mazda MX-5 Miata gets significantly better fuel economy, up to 30 MPG combined, due to its smaller engine and lighter weight. However, the Miata emphasizes handling over power. The Ford Mustang EcoBoost Convertible offers similar horsepower and gets a slightly lower 25 MPG combined. The Audi S5 is similar to the M240i at 24 MPG combined, but it is a higher-priced car. These comparisons show the trade-offs when choosing a sporty convertible. The M240i balances performance and efficiency, which appeals to buyers who want a powerful engine in a compact car, something verified by looking at M240I MPG across all years.

Tips to maximize efficiency

Smooth and steady acceleration improves fuel economy in the M240i. Avoid sudden acceleration, and anticipate traffic to minimize braking. The turbocharged engine responds well to inputs, allowing you to maintain momentum without using too much fuel.

Use the car’s Eco Pro driving mode. This mode adjusts throttle response and transmission mapping to improve fuel efficiency. It may slightly reduce acceleration, but it can improve MPG in city driving and highway cruising. It’s a way to save some fuel.

Keep your tires inflated and your car serviced. Underinflated tires increase rolling resistance, which reduces fuel economy. Regular maintenance, including oil changes and air filter replacements, helps the engine operate efficiently; you can find all Bmw fuel economy data to keep track of these details.

Reduce weight in the car. Extra cargo adds weight, which uses more energy to accelerate. Remove items you don’t need for your daily commute. This can be as simple as emptying the trunk or removing roof racks.