2015 head-to-head · Midsize Car
2015 Audi A6 Diesel vs BMW 5 Series Diesel
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 3.0L 6-cyl turbo · 8-speed automatic · 29 MPG
The 2015 BMW 5 Series Diesel is the cheaper one to run. Driving 15,000 miles a year with $3.70/gal diesel fuel, it costs about $1,850 a year to fuel (30 MPG), versus $1,914 for the 2015 Audi A6 Diesel (29 MPG). That's roughly $64 a year, or about $319 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Audi A6 Diesel
- BMW 5 Series Diesel
Side by side
| Audi A6 Diesel | BMW 5 Series Diesel | |
|---|---|---|
| $1,914 | Your annual fuel cost | $1,850 |
| 29 MPG | Combined efficiency | 30 MPG |
| 24 MPG | City | 26 MPG |
| 38 MPG | Highway | 38 MPG |
| 98 cu ft | Passenger volume | 102 cu ft |
| 16 cu ft | Cargo volume | 14 cu ft |
| 349 g/mi | Tailpipe CO₂ (g/mi) | 334 g/mi |
| 7/10 | EPA fuel economy score | 7/10 |
| 6/10 | EPA greenhouse gas score | 7/10 |
| Diesel | Powertrain | Diesel |
| Diesel | Fuel | Diesel |
| 3.0L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 8-speed automatic |
| AWD | Drivetrain | RWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Audi A6 Diesel vs BMW 5 Series Diesel across model years
- Audi A6 Diesel
- BMW 5 Series Diesel
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the BMW 5 Series Diesel has more passenger space (102 vs. 98 cu ft); the Audi A6 Diesel has more cargo space (16 vs. 14 cu ft).
Among 69 2015 midsize cars, the Audi A6 Diesel ranks 38th and the BMW 5 Series Diesel 35th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Audi A6 Diesel or the 2015 BMW 5 Series Diesel?
Measured by cost to drive, the BMW 5 Series Diesel. The Audi A6 Diesel is rated 29 MPG combined and the BMW 5 Series Diesel 30 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Audi A6 Diesel vs. the BMW 5 Series Diesel per year?
At 15,000 miles a year with $3.70/gal diesel fuel, about $1,914 for the Audi A6 Diesel and $1,850 for the BMW 5 Series Diesel.
Which has more cargo space?
The Audi A6 Diesel, with 16 cu ft of luggage volume versus 14 cu ft (EPA interior volume index).
Audi A6 Diesel vs BMW 5 Series Diesel in other years
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