Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 18, 2026.
Fuel economy
11–14 mpgcombined; city 10–13, highway 12–16; every version of this model year
Five years of fuel
$28,750–$36,590U.S. average; Ohio $27,080–$34,470 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA overall safety rating
Not ratedNHTSA has no overall rating for this year
Owners have filed 6 complaints with NHTSA about the 2023 G-Class. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Fuel/propulsion system
3
0
0
0
Engine
2
0
0
0
Unknown or other
2
0
0
1
Power train
1
0
0
0
What the columns count
Complaints: complaints that name that part. One complaint can name several parts, so the rows overlap and don't add up to the total.
Crashes and Fires: complaints that report one. Two owners can file about the same event, and NHTSA doesn't link them, so these count reports, not events.
Injuries: the number of people the complaints say were injured.
None of these columns shows that a part caused a crash, fire or injury: they're what owners reported, unverified.
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 5 recall campaigns for the 2023 G-Class over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
Latches/locks/linkages: doors
NHTSA campaign 24V659000 · reported Sep 9, 2024 · 134 vehicles potentially affected across the whole campaign
Remedy: Dealers will replace the right-side rear door latches, free of charge. Owner notification letters were mailed October 11, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. Vehicles in this recall that were previously repaired under recall 21V-353 will need to have the new remedy completed.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2023 G 550 and 2019-2022 G63 AMG vehicles that received a replacement door latch during a service visit or prior recall repair. Components within the right-side rear door latch may prevent the rear doors from latching or opening properly.
Risk: The rear door may appear closed even when the latch is not fully engaged, allowing the door to open while driving and increasing the risk of injury or a crash. Damaged latch components may prevent the rear door from being opened while inside the vehicle, increasing the risk of injury.
NHTSA campaign 24V170000 · reported Mar 1, 2024 · 9 vehicles potentially affected across the whole campaign
Remedy: Dealers will replace the air-conditioning refrigerant, free of charge. Owner notification letters were mailed April 12, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024030016.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022-2023 AMG G 63 and 2023 G 550 vehicles. The air-conditioning system may not have been filled with the correct refrigerant.
Risk: In the event of a crash, the incorrect refrigerant may leak and increase the risk of a fire.
NHTSA campaign 23V880000 · reported Dec 21, 2023 · 79,676 vehicles potentially affected across the whole campaign
Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 28, 2024. Owner notification letters will be mailed in phases, on February 23, 2024, April 19, 2024, June 28, 2024, August 9, 2024, October 1, 2024, and December 2, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 23V-445.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2024 GLE, GLS, C-Class, E-Class, S-Class, SL, GLC, CLS, AMG GT, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, causing a loss of drive power.
Risk: A loss of drive power can increase the risk of a crash.
NHTSA campaign 23V851000 · reported Dec 15, 2023 · 590 vehicles potentially affected across the whole campaign
Do not drive until repaired
Remedy: Owners are advised not to drive their vehicles until the repair has been performed. Towing to an authorized Mercedes-Benz dealer may be necessary. Owner notification letters were mailed on June 28, 2024. Owner notification letters will be mailed in phases, on June 28, 2024, August 9, 2024, August 23, 2024, and September 25, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024040012/050005. This recall expands and replaces previous recall number 22V-937. Vehicles previously repaired under recall 22V-937 will need to have the new remedy completed.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022-2023 AMG G63 special edition 4x4² (squared) vehicles. The rear axle differential housing may develop cracks, possibly resulting in oil leaking onto the roadway or axle failure.
Risk: Oil leaking onto the roadway may cause a road hazard for following traffic. Rear axle failure can result in a sudden loss of handling or drive power. Either of these conditions can increase the risk of a crash.
NHTSA campaign 23V445000 · reported Jun 26, 2023 · 143,551 vehicles potentially affected across the whole campaign
Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.
Risk: A loss of drive power can increase the risk of a crash.
Carmakers sent NHTSA 139 service bulletins and notices that cover the 2023 G-Class, the latest on Sep 26, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (50), power train (26), engine (20), service brakes (13), structure (12).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2023 G-Class.
EPA class: standard sport utility vehicle. EPA greenhouse gas score: 1–2 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
AMG G 63 Squared 4-Wheel Drive
4.0 L, 8 cyl, turbo
Automatic 9-spd
Premium Gasoline
10 / 12 / 11
AMG G63 4-Wheel Drive
4.0 L, 8 cyl, turbo
Automatic 9-spd
Premium Gasoline
13 / 16 / 14
G550 4-Wheel Drive
4.0 L, 8 cyl, turbo
Automatic 9-spd
Premium Gasoline
13 / 16 / 14
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 18, 2026
NHTSA recalls, file of Oct 18, 2026
NHTSA manufacturer communications, file of Oct 18, 2026
NHTSA defect investigations, file of Oct 18, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data