Honda Civic vs Toyota Mirai: Specs Compared
Also searched as Toyota Mirai vs Honda Civic specs — both orientations show this same side-by-side comparison.
The Toyota Mirai is the more efficient of the two: it reaches 74 mpg combined versus 49 mpg for the Honda Civic, a 25 mpg advantage.
Across 3 measured categories, the Toyota Mirai leads in 3. Figures are EPA test data, not manufacturer claims.
Head-to-head specifications
| Metric | Honda Civic | Toyota Mirai |
|---|---|---|
| Best combined MPG | 49 mpg | 74 mpg ✓ |
| Best city MPG | 50 mpg | 76 mpg ✓ |
| Best highway MPG | 47 mpg | 71 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $1,250 | Not available |
| Lowest CO2 output | 181 g/mi | Not available |
| Engines offered | SIDI, SIDI; Hybrid, 2.0, RNG=193 | PEFC |
| Transmissions | Manual 6-spd, Automatic (variable gear ratios), Automatic (AV-S7) | Automatic (variable gear ratios) |
| Drivetrains | Front-Wheel Drive | Rear-Wheel Drive, Front-Wheel Drive |
| Fuel types | Premium, Regular, CNG | Hydrogen |
| EPA class | Midsize Cars | Compact Cars |
| Years covered | 2015–2026 | 2016–2026 |
| Configurations on record | 132 | 17 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Honda Civic vs Toyota Mirai dimensions and size
The Toyota Mirai is 11.8 inches longer than the Honda Civic on a wheelbase 7.1 inches longer, and 1,188.3 lbs heavier. Both clear the roughly 200 inches of usable length in a standard single garage bay.
| Dimension | Honda Civic (2026) | Toyota Mirai (2026) | Difference |
|---|---|---|---|
| Length | 183.9 in | 195.7 in | 11.8 in |
| Width (excl. mirrors) | 70.9 in | 74 in | 3.1 in |
| Height | 55.9 in | 57.9 in | 2 in |
| Wheelbase | 107.9 in | 115 in | 7.1 in |
| Curb weight | 3,067 lbs | 4,255 lbs | 1,188 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.
Honda Civic vs Toyota Mirai: what the numbers mean
City and highway economy: the Toyota Mirai leads in both cycles — 76 mpg city and 71 mpg highway against 50 and 47 mpg — so its fuel-efficiency advantage holds whether you commute in traffic or cover long highway miles.
Powertrain choice: the Honda Civic is recorded with 4 distinct engine configurations (SIDI, SIDI; Hybrid, 2.0), the Toyota Mirai with 1 (PEFC). Across 132 recorded Honda Civic configurations and 17 for the Toyota Mirai, the wider the engine spread the more the real-world fuel efficiency depends on which version you actually buy, so check the specific model year and drivetrain rather than the headline number.
Drivetrain and class: the Honda Civic is offered with Front-Wheel Drive, the Toyota Mirai with Rear-Wheel Drive, Front-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 Midsize Cars and Compact Cars respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.
Civic vs Mirai: common questions
Which is better on gas, the Honda Civic or the Toyota Mirai?
The Toyota Mirai is the more efficient of the two: it reaches 74 mpg combined versus 49 mpg for the Honda Civic, a 25 mpg advantage.
What engines do the Civic and Mirai offer?
Honda Civic: SIDI, SIDI; Hybrid, 2.0, RNG=193. Toyota Mirai: PEFC.
Are they in the same vehicle class?
The EPA classifies the Honda Civic as Midsize Cars and the Toyota Mirai as Compact Cars, so they aren't a like-for-like match on size.
More Civic comparisons
More Mirai comparisons
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