Luxury Cars with the Worst MPG
When you invest in a luxury vehicle, you expect the best in comfort, performance, and technology. However, some of these high-end cars prioritize those features over fuel efficiency, leading to some surprisingly low MPG ratings. If you’re in the market for a luxury car, here are seven that you may want to avoid if you’re concerned about how much you’ll be spending on gas.
Rolls-Royce Phantom
Rolls-Royce is synonymous with luxury, offering a “penthouse on wheels.” The Phantom, with a starting price around $510,000 and models reaching $1,000,000, delivers on that promise. However, fuel efficiency is not its strong suit.
The Environmental Protection Agency (EPA) rates the Phantom at a combined 14 mpg. This figure leans towards the city mileage of 12 mpg, with 18 mpg on the highway. Given how these cars are typically driven, you’ll likely find yourself in an urban environment. With a 23.8-gallon tank, you’ll only get about 333 miles on a single tank. You may end up spending over $4,300 annually on fuel.
Rolls-Royce Ghost
The Ghost shares the Phantom’s poor fuel economy. The “cheaper” alternative, with a starting price of $370,000, still carries a hefty price tag. Its combined fuel efficiency is also 14 mpg, with 12 mpg in the city and 19 mpg on the highway. The Ghost has a slightly smaller 21.8-gallon tank, giving it a range of around 305 miles on a single fill-up. Just like the Phantom, the EPA estimates an annual gas cost of $4,300.
Mercedes-Benz AMG GT 55/63
Mercedes-Benz’s AMG division focuses on performance, which affects fuel economy. The AMG GT 55 and 63 models are not fuel-efficient though they are powerful. The 55 has 469 hp, and the 63 has 577 hp. These cars have a combined mileage of 14 mpg, with 12 mpg in the city and 19 mpg on the highway. For a car with a starting price of $137,550, you can expect to spend thousands of dollars on gas each year.
Mercedes-Benz Maybach S 680
The Maybach division of Mercedes-Benz is focused on luxury and combines performance, style, and comfort. The 2025 Mercedes-Benz Maybach S 680 sedan utilizes a 6.0L V12 engine. However, it only gets a combined 15 mpg, with 12 mpg in the city and 20 mpg on the highway. With a 22.2-gallon tank, the car has a range of about 333 miles on a single tank and costs around $4,000 per year in fuel.
Bentley Continental GT/GTC
Similar to Rolls-Royce, Bentley is synonymous with luxury. The Continental GT and GTC models have poor fuel economy. With the 4.0L V8 engine, the GT manages a combined 17 mpg. Things worsen for GTC decreasing the overall to 16 mpg combined. If you opt for the 6.0L V12, you’ll get a combined 15 mpg. You’ll likely pay a lot for gas with either vehicle.
Cadillac CT5
Cadillac, a North American brand, also produces vehicles with poor fuel economy. The CT5 sedan, despite its relatively lower starting price of $48,990 is not very efficient. With a 6.2L V8 engine, expect only 15 mpg combined (13 mpg in the city and 20 mpg on the highway.) The 17-gallon gas tank gives it a range of only 255 miles.
Audi RS 7
Audi’s RS 7 performance sedan, with a starting price of $128,600, is not very efficient. While it is a hybrid model that offers a blend of performance and efficiency, it’s still disappointing. It gets 17 mpg combined (14 mpg in the city and 21 mpg on the highway). With a 19.3-gallon tank, the RS 7 can travel about 328 miles on a single fill-up.
