Specs, fluids & service · 2018–present
Mercedes-Benz G-Class (second generation) specs, fluids and service intervals
The numbers you need in the garage, on one page: spec sheet, capacities and service intervals, wheels and tires, and the parts to order. Sourced from owners, specialists and the factory; tags marked confirm in manual haven't been checked against a factory source yet.
Spec sheet
| CHASSIS | W463 (“W463A”) |
|---|---|
| YEARS | 2018–present |
| ENGINE (US G 550) | 4.0 TT V8 (to 2024) · 3.0 I6 mild hybrid (2025–) |
| OUTPUT | 416 hp → 443 hp |
| TRANSMISSION | 9G-TRONIC 9-speed |
| DRIVE | Permanent 4WD, 40:60, low range 2.93:1 |
| LOCKERS | Centre, rear, front |
| SUSPENSION | Double-wishbone front · rigid rear |
| CLEARANCE | 9.5 in |
| WADING | 27.6 in (G 580: 33.5 in) |
| ANGLES | 31° / 30° / 26° |
| BUILT IN | Graz, Austria |
By year
| YEARS | PLATFORM | ENGINE | OUTPUT | NOTES |
|---|---|---|---|---|
| 2018–2024 | G 500 / G 550 (US) | M176 4.0 L twin-turbo V8 | 416 hp · 450 lb-ft | 9G-TRONIC; launched at Detroit, January 2018 |
| 2018– | AMG G 63 | AMG 4.0 L twin-turbo V8 | 577 hp · 627 lb-ft | Unveiled at Geneva, March 2018 |
| 2019– | G 350 d / G 400 d (not US) | OM656 2.9 L inline-six diesel | 282 hp / 326 hp | Diesel sold in other markets |
| 2022– | G 63 4×4² | AMG 4.0 L twin-turbo V8 | 585 hp | Portal axles with independent front; $350,050 |
| 2025– | G 550 (US) | 3.0 L turbo inline-six, mild hybrid | 443 hp · 413 lb-ft | Cd 0.48; transparent-bonnet camera view |
| 2025– | G 580 with EQ Technology | Four motors, 116 kWh battery | 579 hp | G-Turn, virtual lockers, 33.5 in wading |
Fluids, capacities & service intervals
The second-generation G is still young enough that many have only had dealer A/B services — which skip most driveline fluids. This list covers the 2019–2024 V8 trucks; the 2025-on inline-six G 550 and the electric G 580 have different service needs, so check their manuals.
| ITEM | SPEC / CAPACITY | INTERVAL | NOTES & PARTS |
|---|---|---|---|
| Engine oil & filter | M176 4.0 twin-turbo · MB 229.52 or 229.61 · 10.0 US qt (9.5 L) with filter (2019 G 550 owner's manual) | Now, then when the ASSYST PLUS display calls for it. The manual says to service more often for arduous use, such as mountain driving and poor road surfaces. | FCP Euro lists its ≈10-litre M176 kit for the 2019–2024 G 550. Check that the oil carries MB 229.52 or 229.61. These figures are for the V8; check the manual for the 2025-on inline-six.Liqui Moly 5W-40 Top Tec 4110 M176 oil change kit (≈10 L) · FCP Euro ↗Genuine Mercedes oil filter element 176 180 08 00 · FCP Euro ↗ |
| Air filters | M176 air filters | Now if undated | Genuine Mercedes air filter 177 094 01 04 (G 550 2019–2024) · FCP Euro ↗ |
| Cabin air filter | 2019-on cabin filter | Now, then yearly | Genuine Mercedes cabin air filter 463 835 28 00 · FCP Euro ↗ |
| Spark plugs & coils | M176 spark plugs (Mercedes-spec) | Now if no record confirm in manual | Genuine Mercedes spark plug 000 159 05 00 (M176) · FCP Euro ↗Genuine Mercedes ignition coil 177 906 02 06 (M176) · FCP Euro ↗ |
| Coolant | MB 325.6 (pink), FCP Euro lists it for the G 550 from 2015 on · 14.9 US qt (14.1 L) (2019 G 550 manual) | Now if undated | Mix 50/50 with distilled water.Genuine Mercedes coolant, MB 325.6 (pink), 1 gal · FCP Euro ↗ |
| Automatic transmission (9G-TRONIC 725.0) | MB 236.17 (yellow) | Now if no record confirm in manual | On the 9G-TRONIC the filter is part of the pan. Ask for a shift-adaptation reset with XENTRY after the service.Liqui Moly Top Tec ATF 1950, MB 236.17 (yellow) · FCP Euro ↗Genuine Mercedes 9G-TRONIC oil pan with filter 725 270 31 14 (listed for 2019–2021 G 63) · FCP Euro ↗ |
| Transfer case | Fluid type and capacity confirm in manual | Now if no record | Check the output-shaft seals for weeps — a known leak point.Corteco transfer case output shaft seal, front outer · FCP Euro ↗ |
| Front & rear differentials | Gear oil type and capacity confirm in manual | Now if no record | Independent front, rigid rear, both locking. Engage low range and each lock on loose ground to confirm the ‘G’ icon and locker lights. |
| Steering | Electric rack-and-pinion — no power steering fluid | At purchase | Instead, check the tie-rod ends and boots, and the front-axle wiring harness routing near the oil cooler (recall 23V097). |
| Brake fluid | DOT 4 Plus (Genuine Mercedes) · MB approval 331.0 (owner's manual) | Now, then every 2 years confirm in manual | Genuine Mercedes DOT 4 Plus brake fluid, 1 L · FCP Euro ↗ |
| Drive belts | M176 accessory belt + A/C belt | Inspect now; replace if cracked | Continental accessory drive belt (M176) · FCP Euro ↗Contitech A/C belt 4K × 1038 · FCP Euro ↗ |
| Door hinges | Mercedes-approved grease | Every service | Regular grease keeps the heavy doors from sagging at the striker. |
| Recalls & software | NHTSA 23V097 (2019–2021) · head-unit software | At purchase | Run the VIN through NHTSA and ask the dealer to load the latest software and maps. |
| 12-volt battery | AGM (absorbent glass mat). The manual says full function is only guaranteed with an AGM battery. | Load-test now | Load-test it, especially on a truck that has sat unused. |
Capability
| Towing | 7,700 lb (3,493 kg) 2019 G 550, braked |
|---|---|
| GVWR | 6,614 lb (3,000 kg) 2019 G 550 |
| Fuel tank | 26.4 US gal (100 L) 2019 G 550 |
| Ground clearance | 9.5 in (241 mm) maximum load; G 580: 9.8 in |
| Approach / departure / breakover | 30.9° / 29.9° / 23.5° MBUSA 2019 spec sheet, breakover at maximum load; launch press quoted 31° / 30° / 26° |
| Wading depth | 27.6 in (700 mm) G 580: 33.5 in |
| Low range | 2.93:1 |
| Fuel economy | EPA 13 city / 17 hwy / 14 comb (2019 V8); 17 / 19 / 18 (2025 inline-six); G 580: 62 MPGe combined, 239-mile range |
| Curb weight | 5,551 lb (2,518 kg) 2019 G 550 |
| Turning circle | 44.6 ft (13.6 m) |
Wheels & tires
| Factory tire | 275/55R19 on 8.5x19 (2019 G 550) · 275/50R20 (option) · 265/60R18 all-terrain (optional 18-inch package) |
|---|---|
| Bolt pattern | 5x130 |
| Center bore | 84.1 mm |
| Lug thread | M14x1.5 bolts |
| Biggest tire · 2.5 in | 33 in |
Open the G-Class (second generation) in the tire fitment tool →
Common G-Class (second generation) repairs
- Front-axle harness recall (23V097)DIFFICULTY 1 / 5
- Transfer-case output seal leakDIFFICULTY 3 / 5
- Door hinge sagDIFFICULTY 3 / 5
- Infotainment freeze or rebootDIFFICULTY 1 / 5
- 9-speed shift adaptationDIFFICULTY 2 / 5
- Fitting a 2.5-inch lift and 33sDIFFICULTY 3 / 5
- Diff locks fail, ESP/ABS warnings (recall 20V-090)DIFFICULTY 1 / 5
- Rear door won't latch or open (recalls 21V-353 and 24V-659)DIFFICULTY 1 / 5
Always confirm torque figures, fluids and capacities against the factory service manual for your VIN. See the disclaimer; some parts links are affiliate links.