2015 head-to-head · Midsize Car
2015 BMW 5 Series Diesel vs Cadillac CTS
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2015 BMW 5 Series Diesel is the cheaper one to run. Driving 15,000 miles a year with $3.70/gal diesel fuel and $3.10/gal regular gas, it costs about $1,850 a year to fuel (30 MPG), versus $1,938 for the 2015 Cadillac CTS (24 MPG). That's roughly $88 a year, or about $438 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
- BMW 5 Series Diesel
- Cadillac CTS
Side by side
| BMW 5 Series Diesel | Cadillac CTS | |
|---|---|---|
| $1,850 | Your annual fuel cost | $1,938 |
| 30 MPG | Combined efficiency | 24 MPG |
| 26 MPG | City | 20 MPG |
| 38 MPG | Highway | 30 MPG |
| 102 cu ft | Passenger volume | 97 cu ft |
| 14 cu ft | Cargo volume | 13 cu ft |
| 334 g/mi | Tailpipe CO₂ (g/mi) | 374 g/mi |
| 7/10 | EPA fuel economy score | 6/10 |
| 7/10 | EPA greenhouse gas score | 6/10 |
| Diesel | Powertrain | Gas |
| Diesel | Fuel | Regular gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | 6-speed automatic |
| RWD | 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.
BMW 5 Series Diesel vs Cadillac CTS across model years
- BMW 5 Series Diesel
- Cadillac CTS
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. 97 cu ft); the BMW 5 Series Diesel has more cargo space (14 vs. 13 cu ft).
Among 69 2015 midsize cars, the BMW 5 Series Diesel ranks 35th and the Cadillac CTS 43rd for lowest fuel cost.
The powertrains differ: the BMW 5 Series Diesel is a diesel, while the Cadillac CTS is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2015 BMW 5 Series Diesel or the 2015 Cadillac CTS?
Measured by cost to drive, the BMW 5 Series Diesel. The BMW 5 Series Diesel is rated 30 MPG combined and the Cadillac CTS 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 BMW 5 Series Diesel vs. the Cadillac CTS per year?
At 15,000 miles a year with $3.70/gal diesel fuel and $3.10/gal regular gas, about $1,850 for the BMW 5 Series Diesel and $1,938 for the Cadillac CTS.
Which has more cargo space?
The BMW 5 Series Diesel, with 14 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
BMW 5 Series Diesel vs Cadillac CTS in other years
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