BMW i7 vs Rolls-Royce Spectre: Specs Compared
Also searched as Rolls-Royce Spectre vs BMW i7 specs — both orientations show this same side-by-side comparison.
The BMW i7 is the more efficient of the two: it reaches 92 mpg combined versus 81 mpg for the Rolls-Royce Spectre, a 11 mpg advantage and costs about $150 less per year to fuel.
Across 4 measured categories, the BMW i7 leads in 4. Figures are EPA test data, not manufacturer claims.
2024–2026
Rolls-Royce Spectre
Compact Cars · 12 configurations
Head-to-head specifications
| Metric | BMW i7 | Rolls-Royce Spectre |
|---|---|---|
| Best combined MPG | 92 mpg ✓ | 81 mpg |
| Best city MPG | 91 mpg ✓ | 77 mpg |
| Best highway MPG | 95 mpg ✓ | 86 mpg |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $800 ✓ | $950 |
| Lowest CO2 output | Not available | Not available |
| Engines offered | Not available | Not available |
| Transmissions | Automatic (A1) | Automatic (A1) |
| Drivetrains | All-Wheel Drive, Rear-Wheel Drive, 4-Wheel Drive | All-Wheel Drive |
| Fuel types | Electricity | Electricity |
| EPA class | Large Cars | Compact Cars |
| Years covered | 2023–2027 | 2024–2026 |
| Configurations on record | 34 | 12 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
BMW i7 vs Rolls-Royce Spectre dimensions and size
The Rolls-Royce Spectre is 2.4 inches longer than the BMW i7 on a wheelbase 0.4 inches shorter, and 216.1 lbs heavier. At over 200 inches, the larger of the two is past the comfortable limit of a standard 192-inch single garage bay once you allow walking room.
| Dimension | BMW i7 (2026) | Rolls-Royce Spectre (2026) | Difference |
|---|---|---|---|
| Length | 212.2 in | 214.6 in | 2.4 in |
| Width (excl. mirrors) | 76.8 in | 81.9 in | 5.1 in |
| Height | 60.6 in | 61.4 in | 0.8 in |
| Wheelbase | 126.8 in | 126.4 in | 0.4 in |
| Curb weight | 6,343 lbs | 6,559 lbs | 216 lbs |
Width excludes mirrors; add 8–12 inches for mirrors out. Figures are for the newest model year on record for each vehicle. See both drawn to scale.
BMW i7 vs Rolls-Royce Spectre: what the numbers mean
Running cost over five years: at the EPA's 15,000-mile-a-year assumption the BMW i7 burns about $800 of fuel annually against $950 for the Rolls-Royce Spectre. That $150 yearly gap compounds to roughly $750 over five years and $1,200 over eight — often more than the price difference between two trims of the same vehicle, and the single largest running-cost line item separating these two.
City and highway economy: the BMW i7 leads in both cycles — 91 mpg city and 95 mpg highway against 77 and 86 mpg — so its fuel-efficiency advantage holds whether you commute in traffic or cover long highway miles.
Drivetrain and class: the BMW i7 is offered with All-Wheel Drive, Rear-Wheel Drive, 4-Wheel Drive, the Rolls-Royce Spectre with All-Wheel Drive. All-wheel drive typically costs one to two mpg combined against the same vehicle in front- or rear-wheel drive, which is worth remembering when the gap between these two is small. The EPA classes them as Large Cars and Compact Cars respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.
i7 vs Spectre: common questions
Which is better on gas, the BMW i7 or the Rolls-Royce Spectre?
The BMW i7 is the more efficient of the two: it reaches 92 mpg combined versus 81 mpg for the Rolls-Royce Spectre, a 11 mpg advantage and costs about $150 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the BMW i7 runs about $800 a year in fuel at its most efficient configuration, versus about $950 for the Rolls-Royce Spectre — a difference of roughly $150 per year.
What engines do the i7 and Spectre offer?
BMW i7: no engine data on record. Rolls-Royce Spectre: no engine data on record.
Are they in the same vehicle class?
The EPA classifies the BMW i7 as Large Cars and the Rolls-Royce Spectre as Compact Cars, so they aren't a like-for-like match on size.
More i7 comparisons
More Spectre comparisons
Comparison id: bmw-i7-vs-rolls-royce-spectre