Least fuel-efficient large cars
Combined MPG from the bottom. A low figure is not automatically a bad buy — a three-quarter-ton pickup and a hatchback are not doing the same job — but it is the number that decides what a year of that job costs, which the cost column puts in dollars.
| # | Car | Type | Efficiency | EPA annual fuel |
|---|---|---|---|---|
| 1 |  Rolls-Royce Ghost |
Gasoline | 13 mpg | $5,950 |
| 2 |  Rolls-Royce Phantom |
Gasoline | 13 mpg | $5,950 |
| 3 |  Mercedes-Benz S-Class |
Gasoline | 14 mpg | $5,500 |
| 4 |  Audi S8 Hybrid |
Hybrid | 18 mpg | $4,300 |
| 5 |  Dodge Charger |
Gasoline | 19 mpg | $4,050 |
| 6 |  Genesis G90 Hybrid |
Hybrid | 20 mpg | $3,850 |
| 7 | Genesis G90 |
Gasoline | 21 mpg | $3,650 |
| 8 |  Porsche Panamera |
Gasoline | 21 mpg | $3,650 |
| 9 | Porsche Panamera Plug-in hybrid |
Plug-in hybrid | 21 mpg on gas | $3,650 |
| 10 |  Audi A8 Hybrid |
Hybrid | 22 mpg | $3,500 |
| 11 |  Genesis G80 |
Gasoline | 23 mpg | $3,350 |
| 12 | Mercedes-Benz S-Class Hybrid |
Hybrid | 23 mpg | $3,350 |
| 13 |  BMW 7 Series Plug-in hybrid |
Plug-in hybrid | 24 mpg on gas | $3,200 |
| 14 |  Hyundai Sonata |
Gasoline | 27 mpg | $2,300 |
| 15 |  Kia K5 |
Gasoline | 27 mpg | $2,300 |
| 16 | BMW 7 Series Hybrid |
Hybrid | 28 mpg | $2,750 |
| 17 |  Acura Integra |
Gasoline | 32 mpg | $2,400 |
| 18 | Hyundai Sonata Hybrid |
Hybrid | 47 mpg | $1,300 |
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
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Least 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.