2015 head-to-head · Midsize Car
2015 Buick Regal Hybrid vs Volkswagen Passat 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.
FWD · 2.4L 4-cyl · 6-speed automatic · 28 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.10/gal regular gas and $3.70/gal diesel fuel, the most efficient 2015 Buick Regal Hybrid (28 MPG) costs about $1,661 a year to fuel and the 2015 Volkswagen Passat Diesel (34 MPG) about $1,632.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Buick Regal Hybrid
- Volkswagen Passat Diesel
Side by side
| Buick Regal Hybrid | Volkswagen Passat Diesel | |
|---|---|---|
| $1,661 | Your annual fuel cost | $1,632 |
| 28 MPG | Combined efficiency | 34 MPG |
| 24 MPG | City | 30 MPG |
| 35 MPG | Highway | 42 MPG |
| 98 cu ft | Passenger volume | 102 cu ft |
| 13 cu ft | Cargo volume | 16 cu ft |
| 314 g/mi | Tailpipe CO₂ (g/mi) | 299 g/mi |
| 7/10 | EPA fuel economy score | 8/10 |
| 7/10 | EPA greenhouse gas score | 7/10 |
| Hybrid | Powertrain | Diesel |
| Regular gasoline | Fuel | Diesel |
| 2.4L 4-cyl | Engine / motor | 2.0L 4-cyl turbo |
| 6-speed automatic | Transmission | 6-speed manual |
| FWD | Drivetrain | FWD |
✓ 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.
Buick Regal Hybrid vs Volkswagen Passat Diesel across model years
- Buick Regal Hybrid
- Volkswagen Passat 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 Volkswagen Passat Diesel has more passenger space (102 vs. 98 cu ft); the Volkswagen Passat Diesel has more cargo space (16 vs. 13 cu ft).
Among 69 2015 midsize cars, the Buick Regal Hybrid ranks 27th and the Volkswagen Passat Diesel 26th for lowest fuel cost.
The powertrains differ: the Buick Regal Hybrid is a full hybrid, while the Volkswagen Passat Diesel is a diesel.
Frequently asked questions
Which is more fuel-efficient, the 2015 Buick Regal Hybrid or the 2015 Volkswagen Passat Diesel?
Measured by cost to drive, the Volkswagen Passat Diesel. The Buick Regal Hybrid is rated 28 MPG combined and the Volkswagen Passat Diesel 34 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Buick Regal Hybrid vs. the Volkswagen Passat Diesel per year?
At 15,000 miles a year with $3.10/gal regular gas and $3.70/gal diesel fuel, about $1,661 for the Buick Regal Hybrid and $1,632 for the Volkswagen Passat Diesel.
Which has more cargo space?
The Volkswagen Passat Diesel, with 16 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
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