2023 Mercedes-Benz G-Class
Specs, maintenance, fault codes, recalls and repair help for the 2023 Mercedes-Benz G-Class, in one place.
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Vehicle information
Make: Mercedes-Benz
Model: G-Class
Model year: 2023
Class: Passenger vehicle
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Common problems
Checking NHTSA owner complaints…
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Fluids & capacities · 4.0L Turbo V8
- A/C Refrigerant · R-1234yf
- Brake Fluid · DOT 4 low viscosity (FMVSS 116 DOT 4, MB 331.0)1.1 qt / 1.04 L
- Coolant · Mercedes-Benz Anticorrosion/Antifreeze Agent 50/50 mix (MB 310.1)14.8 qt / 14 L
- Engine Oil · 0W-40 full synthetic (MB 229.5)9.5 qt / 8.99 L
- Front Differential · 75W-90 synthetic gear oil (MB 235.75)2.1 qt / 1.99 L
- Power Steering · none — electric power steering
- Rear Differential · 75W-90 synthetic gear oil (MB 235.75)2.4 qt / 2.27 L
- Transfer Case · MB 236.20 transfer case fluid (MB 236.20)1.8 qt / 1.7 L
- Automatic Transmission · Mercedes-Benz MB 236.15 ATF (MB 236.15)19 qt / 17.97 L
- Washer Fluid · windshield washer fluid (all-season)6.9 qt / 6.53 L
Source: Open Labor Project · Confirm with your owner's manual
Key torque specs
- Caliper Mounting Bolts75 lb-ft / 101 N·m
- Wheel Lug Nuts133 lb-ft / 180 N·m
- AC Line Fittings17 lb-ft / 23 N·m
- Compressor Bolts29 lb-ft / 39 N·m
- AC Compressor Bolts18 lb-ft / 25 N·m
- Expansion Valve Fitting8 lb-ft / 11 N·m
- Strut Bolts98 lb-ft / 133 N·m
- Control Arm Bolts109 lb-ft / 148 N·m
- Alternator Mounting Bolts37 lb-ft / 50 N·m
- Alternator Pivot Bolt40 lb-ft / 55 N·m
- Battery Cable Nut12 lb-ft / 16 N·m
- Axle Nut207 lb-ft / 281 N·m
Source: Open Labor Project · Estimated values; verify in the service manual
Maintenance
Service intervals (normal driving)
- Engine oil and filter5,000 mi / 12 mo
- Tire rotation5,000 mi
- Cabin air filter20,000 mi / 24 mo
- Engine air filter20,000 mi / 24 mo
- Brake fluid24 mo
- Spark plugs60,000 mi
- Engine coolant60,000 mi / 72 mo
- Automatic transmission fluid and filter80,000 mi
- Front differential fluid80,000 mi
- Rear differential fluid80,000 mi
- Transfer case fluid80,000 mi
- Poly-V belt (serpentine belt)100,000 mi / 120 mo
- Brake system inspection10,000 mi / 12 mo
- Tire pressure and tread depth inspection10,000 mi / 12 mo
Source: Open Labor Project · Draft schedule; your owner's manual is the final word
Electrical
Battery
- Group 49 AGM · 850 CCA · 92 Ah · 170 min RC
- Group AUX-S agm (auxiliary) · 12 Ah
Source: Open Labor Project
Parts & fitment
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Repair costs
Estimated labor times
- 100K Service4.7–6.3 hr
- 30K Service2.2–3 hr
- 60K Service3–4.5 hr
- 90K Service2.5–3.3 hr
- ABS Module1.4–2 hr
- ABS Pump2.2–3 hr
- ABS Tone Ring - Front1.9–2.8 hr
- ABS Tone Ring - Rear2.2–3.3 hr
- ABS Wheel Speed Sensor - Front0.5–0.7 hr
- ABS Wheel Speed Sensor - Rear0.6–1.2 hr
- AC Accumulator1.1–1.5 hr
- AC Clutch Coil2.2–3.2 hr
- AC Compressor2.1–2.9 hr
- AC Compressor Clutch2.3–3.1 hr
- AC Compressor Oil Add0.4–0.6 hr
Source: Open Labor Project · Estimates, not book times. Shops may quote differently
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Other Mercedes-Benz G-Class years
Sources
Fluids, battery, torque, service intervals and estimated labor times: Open Labor Project. Recalls and complaints: NHTSA. Fuel economy and configurations: FuelEconomy.gov.
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