BMW · 2018
340i xDrive Gran Turismo 3.0L 6-cyl
✓ EPA Verified
Premium Gasoline
Large Cars
All-Wheel Drive
City
20
MPG
Combined
23
MPG
Highway
29
MPG
Annual Fuel Cost
$2,500
Based on 15,000 miles/year · EPA estimates
vs avg gas vehicle
$350
more per year
Class Comparison — Large Cars
Top 48%
Better than 52 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 23 MPG
This vehicle
23 MPG
Class average
33 MPG
Class lowest
14 MPG
EPA Energy & Environment Scores
5
Energy Score
Out of 10
5
GHG Score
Out of 10
382 lbs
Annual CO₂
g/mile tailpipe CO₂
Yes
Start-Stop
Auto stop-start
Vehicle Specifications
Engine3.0L 6-cyl
TransmissionAutomatic (S8)
DriveAll-Wheel Drive
Fuel TypePremium Gasoline
Vehicle ClassLarge Cars
Engine DescSIDI
Start-StopYes
EPA Vehicle ID39179

23 MPG combined is not the main reason someone buys a 2018 BMW 340i xDrive Gran Turismo. This vehicle is chosen for its unique blend of hatchback practicality, sporting character, and all-weather confidence. The 340i GT appeals to a specific buyer: someone who values driving dynamics and loves the feeling of a premium German car but refuses to compromise on cargo space or all-wheel drive security. The 340i Gran Turismo blends features others don’t.

City and highway performance

The EPA estimates of 20 MPG in the city and 29 MPG on the highway reveal much about the 340i xDrive Gran Turismo’s driving personality. The 20 MPG city figure reflects the realities of stop-and-go driving conditions. The turbocharged 3.0-liter inline-six engine, while smooth and responsive, needs fuel to deliver its impressive power, especially during frequent acceleration. However, the 29 MPG highway rating highlights the engine’s efficiency at steady speeds. Its eight-speed automatic transmission keeps the engine within its sweet spot for fuel economy on long drives, making it a respectable choice for road trips. Achieving this highway number requires a disciplined foot; tapping into the engine’s ample power is tempting.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 BMW 340i xDrive Gran Turismo at $2,500. This figure is based on driving 15,000 miles per year, with a mix of city and highway driving, and assumes national average fuel prices. Keep in mind that this is just an estimate; individual driving habits and local fuel prices can significantly impact the actual cost. Drivers with a heavier foot or those who primarily drive in congested urban areas will likely exceed this figure. Conversely, those who prioritize fuel efficiency and primarily drive on highways may see a lower annual fuel expenditure. For drivers assessing long-term cost of ownership, visiting pages like 340I MPG across all years can be helpful.

Real-world expectations

While the EPA figures provide a benchmark, real-world fuel economy often varies. BMW’s turbocharged inline-six engine encourages spirited driving. Expect to be tempted to accelerate quickly and enjoy the engine’s smooth power delivery. The xDrive all-wheel-drive system enhances traction and stability, but it also adds weight and complexity, which can slightly reduce fuel economy compared to a rear-wheel-drive model. and the Gran Turismo’s shape, while visually appealing and providing ample interior space, is less aerodynamic than a traditional sedan, impacting fuel efficiency at higher speeds. A driver with a lead foot will likely see numbers closer to 18 MPG in the city and perhaps around 26 MPG on the highway. However, a more conservative driver, using eco-driving modes, could potentially match or even slightly exceed the EPA estimates.

How it compares

Compared to other vehicles in its class, the 2018 BMW 340i xDrive Gran Turismo’s fuel economy is average. For example, the Audi A4 Allroad, another all-wheel-drive wagon-like vehicle, achieves an EPA-estimated 25 MPG combined. While the Allroad’s 2.0-liter turbocharged four-cylinder engine delivers less power than the BMW’s inline-six, it offers better fuel efficiency. The Volvo V60 T5 AWD, rated at 24 MPG combined, also provides a more fuel-efficient alternative. A Lexus IS 350 AWD, a traditional sedan with all-wheel drive, comes in at 22 MPG combined, positioning it similarly to the 340i GT. The key difference lies in the priorities of the buyer. Someone prioritizing maximum fuel economy might be swayed by the Audi or Volvo, but the BMW buyer is willing to trade a few miles per gallon for the 340i’s bigger engine, better driving dynamics, and unique hatchback practicality. To see all Bmw fuel economy data, visit FuelEconomyHub.com.

Tips to maximize efficiency

Take advantage of the BMW’s driving mode selector. Switching into Eco Pro mode optimizes various vehicle systems, including throttle response and shift patterns, to prioritize fuel efficiency. While it might dull the driving experience slightly, it can make a noticeable difference in fuel consumption, particularly during city driving.

Pay attention to tire pressure. Ensuring that your tires are properly inflated reduces rolling resistance, leading to improved fuel economy. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on a sticker located on the driver’s side doorjamb or in the owner’s manual.

Avoid unnecessary idling. Letting your engine idle for extended periods, especially in modern vehicles, wastes fuel. If you anticipate waiting for more than a minute, it’s generally more efficient to turn off the engine and restart it when you’re ready to go. This is especially true with a larger engine like the 340i GT’s inline-six.

Practice smooth driving habits. Avoid aggressive acceleration, hard braking, and excessive speeding. Maintaining a steady speed and anticipating traffic conditions can significantly improve fuel economy. The BMW’s instant fuel economy display can be useful in monitoring your driving habits and identifying areas for improvement.