2026 head-to-head · Midsize Car
2026 Bentley Flying Spur Plug-in Hybrid vs Cadillac CT5
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 · 4.0L 8-cyl turbo · 8-speed dual-clutch · 46 MPGe + 19 MPG
The 2026 Bentley Flying Spur Plug-in Hybrid is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, it costs about $2,190 a year to fuel (46 MPGe + 19 MPG), versus $2,279 for the 2026 Cadillac CT5 (26 MPG). That's roughly $89 a year, or about $446 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
- Bentley Flying Spur Plug-in Hybrid
- Cadillac CT5
Side by side
| Bentley Flying Spur Plug-in Hybrid | Cadillac CT5 | |
|---|---|---|
| $2,190 | Your annual fuel cost | $2,279 |
| 46 MPGe + 19 MPG | Combined efficiency | 26 MPG |
| 43 MPGe / 17 MPG | City | 22 MPG |
| 51 MPGe / 22 MPG | Highway | 31 MPG |
| 64 kWh | Electricity use (kWh/100 mi) | — |
| 440 mi | Driving range | — |
| 30 mi | All-electric range | — |
| 102 cu ft | Passenger volume | 99 cu ft |
| 13 cu ft | Cargo volume | 11 cu ft |
| 161 g/mi | Tailpipe CO₂ (g/mi) | 346 g/mi |
| 6/10 | EPA fuel economy score | 5/10 |
| 8/10 | EPA greenhouse gas score | 5/10 |
| 3 hrs | Charge time at 240V | — |
| Plug-in hybrid | Powertrain | Gas |
| Premium gas + electricity | Fuel | Premium gasoline |
| 4.0L 8-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed dual-clutch | Transmission | 10-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.
Bentley Flying Spur Plug-in Hybrid vs Cadillac CT5 across model years
- Bentley Flying Spur Plug-in Hybrid
- Cadillac CT5
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 Bentley Flying Spur Plug-in Hybrid has more cargo space (13 vs. 11 cu ft).
Among 31 2026 midsize cars, the Bentley Flying Spur Plug-in Hybrid ranks 22nd and the Cadillac CT5 25th for lowest fuel cost.
The powertrains differ: the Bentley Flying Spur Plug-in Hybrid is a plug-in hybrid, while the Cadillac CT5 is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2026 Bentley Flying Spur Plug-in Hybrid or the 2026 Cadillac CT5?
Measured by cost to drive, the Bentley Flying Spur Plug-in Hybrid. The Bentley Flying Spur Plug-in Hybrid is rated 46 MPGe + 19 MPG combined and the Cadillac CT5 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Bentley Flying Spur Plug-in Hybrid vs. the Cadillac CT5 per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $2,190 for the Bentley Flying Spur Plug-in Hybrid and $2,279 for the Cadillac CT5.
Which has more cargo space?
The Bentley Flying Spur Plug-in Hybrid, with 13 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
Bentley Flying Spur Plug-in Hybrid vs Cadillac CT5 in other years
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