2018 head-to-head · Midsize Car
2018 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.
AWD · 3.0L 6-cyl turbo · 8-speed automatic · 30 MPG
The 2018 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 2018 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 |
| 36 MPG | Highway | 30 MPG |
| 99 cu ft | Passenger volume | 97 cu ft |
| 14 cu ft | Cargo volume | 13 cu ft |
| 341 g/mi | Tailpipe CO₂ (g/mi) | 376 g/mi |
| 7/10 | EPA fuel economy score | 5/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| Diesel | Powertrain | Gas |
| Diesel | Fuel | Regular gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 3.6L 6-cyl |
| 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.
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 cargo space (14 vs. 13 cu ft).
Among 74 2018 midsize cars, the BMW 5 Series Diesel ranks 36th and the Cadillac CTS 41st 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 2018 BMW 5 Series Diesel or the 2018 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 2018 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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