Mercedes-Benz S-Class Maintenance Plans

The Mercedes-Benz S-Class spans multiple generations from 1999-2025 with a wide spread of engines and powertrains, so maintenance plans can vary by year, drivetrain and fuel type. Use the generation and engine selectors to see the correct service items and intervals for your exact S-Class.

Select your Mercedes-Benz model below to view the online service schedule for your specific engine.

5 models covered

Model Year Range Engines covered Fuel
S-Class 1999-2006 1999-2006 280, -L Petrol (112.922), 320 CDI Diesel (613.960), 320 CDI, -L Diesel (648.960), 320, -L, -LPG LPG,Petrol (112.944), 350 4MATIC, -L Petrol (112.975), 350, -L, -LPG LPG,Petrol (112.972), 400 CDI, -L Diesel (628.960), 400 CDI, L Diesel (628.960), 430 4MATIC, -L, -LPG LPG,Petrol (… Diesel, LPG, Petrol
S-Class 2005-2013 2005-2013 250 CDI BlueEFF Diesel (651.961), 300 Petrol (272.946), 320 CDI Diesel (642.930), 320/350 CDI 4MATIC Diesel (642.932), 350 4MATIC, -LPG LPG,Petrol (272.975), 350 BlueTEC 4MATIC Diesel (642.868), 350 BlueTEC Diesel (642.862), 350 CDI 4MATIC BlueEFF Diesel (642.932), 350 CDI BlueE… Diesel, Electricity, LPG, Petrol
S-Class 2013-2020 2013-2020 300 BlueTEC Hybrid Diesel,Electricity (651.921), 320 Petrol (276.824), 350 BlueTEC 4MATIC Diesel (642.867), 350 BlueTEC, -4MATIC Diesel (642.861), 350 d, -4MATIC Diesel (656.929), 400 4MATIC Petrol (276.824), 400 d, -4MATIC Diesel (656.929), 450 EQ Boost, - 4MATIC Petrol (256.93… Diesel, Electricity, Petrol
S-Class 2021-2025 2021-2025 350 d, -4MATIC Diesel (656.929), 500 4MATIC 48V (MHEV),Petrol (256.930) 48V (MHEV), Diesel, Petrol
S-Class Coupe/Cabrio 2014-2020 2014-2020 400/450 4MATIC Petrol (276.824), 500/550, -4MATIC Petrol (278.929), 63 AMG 4MATIC Petrol (177.980), 63 AMG, -4MATIC Petrol (157.985), 65 AMG Petrol (279.980) Petrol

Servicing by engine type

Petrol S-Class maintenance notes

Petrol S-Class models cover a broad range, from mainstream V6/V8 units to AMG variants, so consumables and access can differ significantly. Regular engine oil and filter changes are critical for timing chain, turbo and variable valve timing components, especially where the schedule allows longer intervals. Plan to replace spark plugs and inspect ignition components at the specified intervals, and keep an eye on coolant condition and auxiliary drive belt wear. Engine families you may see include EQ Boost petrol variants (such as 256/276) as well as AMG petrol engines (such as 156/157/177/279).

Diesel S-Class maintenance notes

Diesel S-Class servicing commonly centres on oil quality and air and fuel filtration, because high-torque diesels are sensitive to neglect. If your car has a DPF and EGR system, sticking to the correct oil specification and keeping on top of service intervals helps reduce soot-related issues. Include checks for intercooler hoses and boost leaks, and watch for coolant loss that can point to leaks under the bonnet. Common diesel families in this range include CDI/BlueTEC units such as 642, 651, 656 and earlier 628/629/613.

Hybrid (Electricity) S-Class maintenance notes

S-Class hybrids combine a conventional engine with an electric motor and high-voltage electronics, so routine servicing covers both standard items and hybrid-specific checks. Even when the engine runs less, the oil, coolant and filters still age, so follow the time-based interval as well as distance. Cooling systems can be more complex on hybrid models, making correct coolant level and condition checks especially important. Examples in this family include diesel-electric and petrol-electric variants (such as BlueTEC Hybrid and Hybrid models).

48V (MHEV) S-Class maintenance notes

48V (MHEV) S-Class models (often branded EQ Boost) still use a petrol engine, but add a belt-driven starter-generator and 48V electrical system. Servicing remains focused on oil, filters and ignition items, while also ensuring charging and stop-start operation behaves correctly and there are no warning lights stored. Because MHEV systems can increase under-bonnet packaging, inspections of belts, pulleys and cooling hoses are worth doing at each service. In this range, you may see 256-based EQ Boost petrol engines paired with 4MATIC.

LPG S-Class maintenance notes

LPG-capable S-Class models still rely on their petrol engine for ignition and core engine operation, so standard petrol service items remain essential. In addition, LPG systems benefit from regular checks for hose condition, secure mounting and correct changeover behaviour between fuels, plus attention to any LPG filters where fitted. If the car is bi-fuel, avoid stretching service intervals, as lean-running or misfires can be harder on valves and ignition parts. Examples include LPG/petrol variants across several petrol engine families (such as 112/113/272/273).

Common service operations for Mercedes-Benz

The operations shown below reflect typical S-Class servicing tasks, but the exact list and cadence depend on the generation and engine you pick. Always follow the schedule for your specific S-Class and confirm any additional items triggered by usage, age and mileage.

Operation Typical interval Notes
Oil and filter changeSee selector aboveVaries by engine and recommended oil grade
Air filter30,000 to 60,000 kmMore often in urban or dusty driving
Cabin filter15,000 to 30,000 km or 1 yearAffects air conditioning and air quality
Brake fluid2 years (all models)Regardless of mileage
CoolantPer manufacturer (typically 5 years or 100,000 km)Check level and condition (colour, deposits) at every service
Front brake padsDepending on use (typically 30,000 to 60,000 km)Wear depends on driving style and load carried
Timing beltSee selector aboveInterval varies widely by engine
Spark plugs (petrol)30,000 to 60,000 kmPetrol engines only

Mercedes-Benz electronic diagnostics

If the engine management light is on, or you are chasing rough running, poor economy or a warning message, an OBD2 scan is the quickest first step. Use our fault-code guide at Mercedes-Benz S-Class OBD2 fault codes to understand common DTC groups (powertrain, emissions, chassis and network/body) and what they usually point to. Confirming stored and pending codes helps you decide whether the next action is a service item, a sensor check, or deeper electrical diagnosis.

What the Mercedes-Benz manual covers

A maintenance plan tells you what to service and when, but you still need the correct method to do the job properly on the S-Class generation you own. A Haynes repair manual adds step-by-step procedures, tightening torques, fluid specifications and component locations that vary across engines and years. It also helps with tasks like filter changes, belt and cooling-system work, brake servicing and basic electrical checks. Choose the manual that matches your exact S-Class to avoid missing model-year differences.

Mercedes-Benz manual