Fuel economy tells a different story when the list starts from the bottom. These vehicles range from work trucks to Italian luxury SUVs, yet every one posts combined ratings between 12 and 15 mpg for the 2026 model year. Twelve of them appear below, each with the figure that earned a spot.
Tech news worth reading: Get Techpresso, the daily email with the most interesting tech news and insights, read by 400,000+ professionals from Google, Apple and OpenAI.
We may earn a commission if you sign up.
1. Ford F-150 Raptor: Six-Figure Thirst
Fuel economy for the top-spec truck is grim: the EPA-derived figures from MPG Buddy puts the Raptor R 4WD at 12 mpg combined, tied for the worst figure on the 2026 list. That rating translates to an estimated $6,850 a year at the pump.
The cost estimate applies to the Raptor R 4WD alone, not to every F-150 on sale. Lesser trims of the same pickup rate far better, so the penalty belongs to this one high-performance variant rather than to the nameplate as a whole.
2. Chevrolet Corvette ZR1: Supercar Appetite
Few cars pair this much speed with this thirst, and the a 2026 mileage ranking lists the Corvette ZR1 at 14 mpg combined. The ZR1 and the all-wheel-drive ZR1X carry the same rating, so the more powerful version gains no combined-mileage edge.
Owners of a mid-engine flagship rarely shop on running costs, yet the number shows what the performance buys in fuel. At 14 mpg, long road trips mean frequent stops, a trade the buyer accepts along with the price.
3. BMW M5: Sedan Versus Wagon
Body style changes the result slightly in the MPG Buddy’s thirstiest list: the M5 sedan manages 14 mpg combined, while the M5 Touring wagon drops to 13. One mile per gallon sounds small but separates two versions of the same high-output model.
The list gives only the ratings, not the reason for the gap. Either way, the M5 sits among the thirstiest cars on sale, a position unusual for a four-door family-capable body.
4. Rolls-Royce Cullinan: Ultra-Luxury Burn
Luxury offers no shelter from the pump, as the MPG Buddy’s 2026 ranking shows with 14 mpg combined for both the Cullinan and the Black Badge version. The darker, more powerful trim earns no worse rating than the standard model.
A very large SUV from this maker produces numbers like these, and buyers at this price seldom treat fuel as a deciding factor. The identical figures simply confirm that the whole Cullinan range lands in the same thirsty bracket.
5. Ram 1500: Top of the List
Pickup trucks dominate the bottom of the rankings, and the ForCar’s worst-MPG list puts the Ram 1500 at 12 mpg combined for 2026, first on the worst-MPG list. That figure matches the lowest ratings in the broader set of thirsty vehicles, including the F-150 Raptor R.
The caveat is that the Ram 1500 spans many engines and drivetrains, so the 12 mpg rating applies to the thirstiest configuration rather than every truck sold. Shoppers comparing trims will find considerably gentler numbers farther down the lineup.
6. Ford Mustang: Pony Car Penalty
The muscle car also lands at the bottom: the ForCar’s 2026 list gives the Ford Mustang 12 mpg combined for 2026. A coupe at that rating sits level with trucks several times its weight.
Appearing here points to a high-output version rather than the whole Mustang line, since the broader MPG Buddy data singles out the GTD at 12 mpg. Standard trims use far less fuel, so the 12 figure reflects the extreme end of the range.
7. Chevrolet Silverado: Full-Size Habit
Full-size pickups fill the middle of the ranking, and the ForCar’s worst-MPG ranking rates the Chevrolet Silverado at 15 mpg combined for 2026. That is a few miles per gallon better than the worst trucks on the same list, yet it still counts as one of the weaker 2026 results.
As with other half-ton trucks, the result depends on engine and drive configuration, and the listed rating marks the thirsty end of a wide lineup. The full-size pickup category as a whole remains a reliable source of low mileage figures.
8. Ford Bronco: Trail Rig Tax
Off-road capability carries a fuel penalty, and the ForCar’s 2026 rankings lists the Ford Bronco at 15 mpg combined for 2026. Four-wheel-drive trail hardware and a boxy shape are the usual reasons such vehicles trail in mileage tables.
The rating matches the Chevrolet Silverado on the same list, which places a recreational trail vehicle alongside a full-size work truck. Other engine choices in the Bronco range are likely to rate better, so the 15 figure should be read as the thirstiest setup, not the entire family.
9. Jeep Wrangler: Hemi-Free V8 Drinker
The most powerful Wrangler pays heavily for its engine: the SlashGear’s worst SUV list reports the 392 V8 versions at 14 mpg combined, with 13 mpg in the city and 17 on the highway. Few off-road SUVs are rated lower.
Highway driving recovers only a few miles per gallon, and city use sits at the low end. Wranglers with smaller engines return better figures, so the 14 mpg result belongs specifically to the V8 trims rather than to every Jeep Wrangler sold.
10. Cadillac Escalade: Flagship Fuel Bill
Size and power combine to hurt the flagship Cadillac, and the SlashGear’s SUV ranking gives the 2026 Escalade-V 13 mpg combined, 11 in the city and 17 on the highway. City driving stays in the low double digits.
The V rating applies to the performance trim only. Standard Escalades are expected to rate somewhat better, which leaves the V as the clearest example of how much fuel a large luxury SUV can use.
11. Dodge Durango: Hellcat Family Hauler
Family practicality gets a Hellcat price at the pump, according to the SlashGear’s worst-mileage SUVs, which rates the 2026 Durango SRT Hellcat at 13 mpg combined, 12 in the city and 17 on the highway. A body meant for family duty makes that figure stand out.
The thirsty reading belongs to the Hellcat trim alone, and less powerful Durango versions are expected to cost less to run. Anyone shopping the family SUV on mileage grounds should compare engines before comparing prices.
12. Ferrari Purosangue: Prancing Horse Gulps
The Italian marque’s SUV sits at the very bottom: the MPG Buddy’s 2026 data reports the Ferrari Purosangue at 12 mpg combined, 11 in the city and 15 on the highway. That combined number ties it with the thirstiest vehicles anywhere on the list.
MPG Buddy’s data puts the Purosangue first on its own ranking, which shows that a high-priced SUV can also be among the least efficient. Buyers at this level are unlikely to see the figure as a drawback, yet the rating is the lowest any listed model can claim.
Tech news worth reading: Get Techpresso →
We may earn a commission if you sign up.
More from Morning Overview
- The FBI told the rest of ShinyHunters to surrender after a 24-year-old was arrested
- Two passengers died at an Ohio toll plaza, and the NTSB now wants the cash lanes shut
- Long use of a common prostate pill is tied to a higher chance of glaucoma
- Ford is recalling 223,472 F-150 pickups because the fuel tank can leak or detach
