2022 Mercedes-Benz G550: MPG and fuel economy

This page collects every fuel-economy figure the EPA publishes for the 2022 Mercedes-Benz G550. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.

Fuel economy at a glance

These are the EPA's official ratings for the 2022 Mercedes-Benz G550. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.

Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).

How the 2022 Mercedes-Benz G550 compares

The 2022 Mercedes-Benz G550 returns 16 combined MPG. Cars in the Standard Sport Utility Vehicle 4WD class for the same model year average 26.3 MPG, which puts this car behind the class average by about 39%.

The most efficient car in the Standard Sport Utility Vehicle 4WD class for the 2022 model year is the Tesla Model X at 102 MPG. The bar chart below puts the Mercedes-Benz G550 alongside the class best and the class average so you can see the full picture.

For broader context, the average new car of the 2022 model year (across all classes) returns 30.7 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2022 model year is on its own page.

Annual fuel cost across driving patterns

The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for premium gasoline, which is $4.61/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.

The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 937.5 gallons (the car's annual consumption at the rated MPG).

Year-over-year MPG for the Mercedes-Benz G550

The EPA has rated the Mercedes-Benz G550 across 17 model years, from 2010 Mercedes-Benz G550 through 2026 Mercedes-Benz G550. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.

The 2010 Mercedes-Benz G550 returned 13 MPG. The most recent 2026 Mercedes-Benz G550 returns 18 MPG. That is an improvement of 5 MPG over 16 model years, the kind of gain that usually comes from smaller engines, hybrid systems, or aerodynamic redesigns.

Compare against other Standard Sport Utility Vehicle 4WD for 2022

If you are cross-shopping the 2022 Mercedes-Benz G550, the most useful comparison is against the other cars in the Standard Sport Utility Vehicle 4WD class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.

The Tesla Model X leads this group at 102 MPG, 86 MPG ahead of the 2022 Mercedes-Benz G550.

Specifications

The 2022 Mercedes-Benz G550 runs a 4-liter 8-cylinder turbocharged engine paired with a automatic 9-spd, sending power through 4-wheel drive.

Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.

Vehicle class

Standard Sport Utility Vehicle 4WD

Engine

4L 8-cylinder turbocharged

Transmission

Automatic 9-spd

Drivetrain

4-Wheel Drive

Fuel type

Premium

Annual petroleum use

18.6 barrels per year

Start-stop system

Yes

Common questions about the 2022 Mercedes-Benz G550

Quick answers to the questions people most often search for when looking up the 2022 Mercedes-Benz G550.

• Is the 2022 Mercedes-Benz G550 fuel efficient?

  Not particularly. The 2022 Mercedes-Benz G550 returns 16 combined MPG, which trails the average car in the Standard Sport Utility Vehicle 4WD class for the same model year by about 39%.
• What MPG does the 2022 Mercedes-Benz G550 get?

  The EPA rates the 2022 Mercedes-Benz G550 at 16 combined MPG, 14 MPG in city driving, and 17 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is.
• How much does it cost to fuel a 2022 Mercedes-Benz G550 per year?

  The EPA estimates an annual fuel cost of $4,300 for the 2022 Mercedes-Benz G550. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade.
• Does the 2022 Mercedes-Benz G550 require premium gas?

  Yes. The EPA lists the 2022 Mercedes-Benz G550 as requiring premium gasoline. Running it on regular can reduce performance and may affect engine warranties, so it is not a recommended way to save at the pump.
• Has the Mercedes-Benz G550 become more fuel efficient over time?

  Yes. The first EPA-rated Mercedes-Benz G550, the 2010 Mercedes-Benz G550, returned 13 combined MPG. The most recent 2026 Mercedes-Benz G550 returns 18 MPG, an improvement of 5 MPG over the run.
• How much CO₂ does the 2022 Mercedes-Benz G550 emit?

  Tailpipe CO₂ emissions are 569 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 8,535 kilograms of CO₂.
• What is the difference between the city and highway MPG of the 2022 Mercedes-Benz G550?

  City driving returns 14 MPG and highway driving returns 17 MPG, a gap of 3 MPG. The two figures are close enough that the car will hold its rated efficiency well across most driving patterns.
• What engine is in the 2022 Mercedes-Benz G550?

  The 2022 Mercedes-Benz G550 has a 4-liter 8-cylinder turbocharged engine (EPA description: SIDI).
• What transmission and drivetrain does the 2022 Mercedes-Benz G550 have?

  The 2022 Mercedes-Benz G550 comes with a automatic 9-spd transmission and 4-wheel drive.
• How does the 2022 Mercedes-Benz G550 compare to the best car in its class?

  The most efficient car in the Standard Sport Utility Vehicle 4WD class for the 2022 model year is the Tesla Model X at 102 combined MPG. The Mercedes-Benz G550 returns 16 MPG, a gap of 86 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.

Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.