Most fuel-efficient large cars
Combined MPG, best-rated version of each nameplate. Electric cars are not here and not because they do worse: they have no MPG. Rating them on MPGe would put a three-figure number at the top of a table it does not belong in, so they are ranked on cost instead, where they can be compared with these fairly.
| # | Car | Type | Efficiency | EPA annual fuel |
|---|---|---|---|---|
| 1 |  Hyundai Sonata Hybrid |
Hybrid | 47 mpg | $1,300 |
| 2 |  Acura Integra |
Gasoline | 32 mpg | $2,400 |
| 3 |  BMW 7 Series Hybrid |
Hybrid | 28 mpg | $2,750 |
| 4 | Hyundai Sonata |
Gasoline | 27 mpg | $2,300 |
| 5 |  Kia K5 |
Gasoline | 27 mpg | $2,300 |
| 6 | BMW 7 Series Plug-in hybrid |
Plug-in hybrid | 24 mpg on gas | $3,200 |
| 7 |  Genesis G80 |
Gasoline | 23 mpg | $3,350 |
| 8 |  Mercedes-Benz S-Class Hybrid |
Hybrid | 23 mpg | $3,350 |
| 9 |  Audi A8 Hybrid |
Hybrid | 22 mpg | $3,500 |
| 10 |  Genesis G90 |
Gasoline | 21 mpg | $3,650 |
| 11 |  Porsche Panamera |
Gasoline | 21 mpg | $3,650 |
| 12 | Porsche Panamera Plug-in hybrid |
Plug-in hybrid | 21 mpg on gas | $3,650 |
| 13 | Genesis G90 Hybrid |
Hybrid | 20 mpg | $3,850 |
| 14 |  Dodge Charger |
Gasoline | 19 mpg | $4,050 |
| 15 |  Audi S8 Hybrid |
Hybrid | 18 mpg | $4,300 |
| 16 | Mercedes-Benz S-Class |
Gasoline | 14 mpg | $5,500 |
| 17 |  Rolls-Royce Ghost |
Gasoline | 13 mpg | $5,950 |
| 18 |  Rolls-Royce Phantom |
Gasoline | 13 mpg | $5,950 |
One row per nameplate, showing its best-rated version — a nameplate sold in six configurations would otherwise take six rows and push everything else off the page. Annual fuel is the EPA's own figure at 15,000 miles and its reference fuel prices; every model page recalculates it from your mileage and your prices. Where these come from.
Other rankings
By fuel
By class
Most fuel-efficient cars, everything together.
Your car's real number
Every figure on this page is an EPA lab rating. What your car actually does depends on your roads, your right foot, and its maintenance history. Carvico calculates your true MPG from your own fill-ups — kept completely private on your iPhone and iCloud.