Mercedes A and B Service: What It Is, When It’s Due, What It Costs

It always seems to happen in the worst week. The dash shows “Service B due” two days before a family trip and three workshops give three different quotes. One mentions brake fluid, another adds spark plugs, and a third warns about warranty. It is confusing and easy to overpay. This guide explains Mercedes A and B service in simple terms so you know what each visit includes, how ASSYST and ASSYST Plus set the timing, and what really affects price. If you are comparing a and b service Mercedes to plan your budget, you will find clear checklists, realistic time and kilometre intervals, and practical tips that help you avoid surprise add ons while protecting your logbook, warranty, and resale value.

What Is Mercedes Service A?

Service A is the routine maintenance visit that keeps your Mercedes running smoothly and protects your logbook. It typically includes engine oil and filter replacement with the correct spec, fluid level checks and top ups, a visual brake inspection, tyre condition and pressure checks, a diagnostic health scan, and a service reminder reset. Depending on model and age, your technician may also note items due at the next visit so you can plan ahead.

ASSYST or ASSYST Plus on your dashboard decides when Service A is due by looking at time, kilometres, and driving conditions. For many models it lands around the first year or roughly 10,000 to 15,000 km, but your car’s system will show the exact timing. Service A is the lighter step in the a and b service Mercedes cycle and usually alternates with the more comprehensive Service B.

What Is Mercedes Service B?

Service B is the more comprehensive visit in the A and B schedule. It includes everything from Service A and adds time based items and deeper checks. Your technician will replace brake fluid when due, look more closely at brakes, steering, suspension, driveline, and the underbody, and fit engine air filters or spark plugs if they are scheduled for your model. Many vehicles also require a transmission service at set intervals. A full diagnostic scan is completed, the digital service record is updated, and any upcoming items are noted so you can plan ahead.

Service B is usually the next interval after Service A. For many models it falls around the second year or roughly 20,000 to 30,000 kilometres. The exact timing is set by ASSYST or ASSYST Plus based on time, mileage, and driving conditions, so always follow what your dashboard displays.

Difference Between A and B Service Mercedes

The difference between a and b service mercedes is mainly scope and depth. Put simply, Service A is the routine visit, while Service B adds time based fluids and deeper inspections. Many owners also ask about the difference between a service and b service mercedes, which is that B usually includes more scheduled replacements and detailed checks.

Task / Check	Service A	Service B
Engine oil and filter	✓	✓
Diagnostic scan and service reset	✓	✓
Fluid level checks and top ups	✓	✓
Tyre condition and pressures	✓	✓
Brake system inspection	Visual	Detailed
Brake fluid change	If due	Commonly due
Steering and suspension inspection	Visual	Detailed
Underbody and driveline checks	Basic	Extended
Cabin or dust filter	If scheduled	Often scheduled
Engine air filter	Rare in A	If scheduled
Spark plugs	Rare in A	If scheduled
Transmission service	Rare in A	If scheduled
Digital service record update	✓	✓

Note: Exact inclusions and timing vary by model, engine type, year, and ASSYST or ASSYST Plus schedule. AMG, diesel, hybrid and EV models can have different requirements. Always follow what your dashboard displays for due items and intervals.

Mercedes Service A vs B Cost Sydney

Mercedes service A vs B cost varies because every car and interval is a little different. Prices reflect what is due at that visit and the specifics of your model and engine.

Factors that change price

• Model and engine type, including AMG and hybrid

• Scheduled items due at that interval such as brake fluid, engine air filter, cabin filter, spark plugs, transmission service

• Fluid specifications and capacities for your engine and gearbox

• Labour time for deeper inspections on Service B

• Extra wear found during checks, for example brakes or tyres

• Choice of genuine or equivalent OEM spec parts

• Workshop diagnostics and digital service record updates

Ask for a written breakdown that lists parts, fluids, labour time, shop supplies and GST. Share your VIN, current kilometres and the dash message so the quote matches what ASSYST or ASSYST Plus shows as due. Request a line that separates due now items from due next visit items so you can budget with no surprises in Artarmon NSW.

Mercedes Service Plan

A mercedes service plan spreads routine maintenance over time so costs are predictable and services follow the A and B schedule for your model. You book when ASSYST or ASSYST Plus says it is due and the plan covers the agreed work at each interval.

What a mercedes service plan usually covers

• Service A items such as correct spec oil and filter, fluid checks, safety checks, diagnostics, and service reset

• Service B additions such as brake fluid when due, deeper inspections, and scheduled filters or spark plugs for your engine

• Transmission service if it is part of the factory schedule for your model and mileage

• Updating the digital service record after each visit (Wear items like brake pads, tyres, or unexpected repairs are usually outside the plan unless specifically included.)

A plan keeps your logbook and digital record complete and consistent, which supports warranty and shows future buyers the car was maintained on time. A full digital history helps protect resale value, reduces the chance of missed services, and gives you clear documentation of exactly what was done at each visit.

Mercedes Service Near You

If you are searching for Mercedes service near you in Artarmon NSW, we make booking simple with clear pricing, logbook safe servicing, and MB Star diagnostics. We serve Artarmon and can check your model and kilometres, give transparent timelines, and handle quick add on checks while your car is here. If the vents smell or airflow is weak, ask about artarmon air conditioning. If the ride feels harsh or you hear clunks, ask about European car suspension repair. Ready to book? Speak with our mercedes mechanics artarmon team for a fast model specific quote.

Conclusion

Staying on top of Mercedes a and b service keeps your car safe, smooth, and easy to own. Once you understand what each visit includes, when ASSYST or ASSYST Plus sets it as due, and what affects price, booking becomes simple. If you want a clear, itemised quote that matches your dashboard and model, talk to our mercedes mechanics artarmon team.

FAQs

Will an independent workshop keep my warranty and digital record?

Yes, when servicing follows Mercedes specifications with compliant parts and fluids, and the digital service record is updated after each visit.

What does a Mercedes service plan usually cover for older models?

Most plans cover Service A and Service B tasks according to schedule, including oil and filters, checks, brake fluid when due, and scheduled filters or plugs. Wear items like pads and tyres are commonly excluded unless specified.

How do I know whether my dash wants A or B next?

Your ASSYST or ASSYST Plus display will state Service A or Service B with a date or distance. Book to what the dash shows for the most accurate timing.