Welcome to MB Motor Services
Mercedes Benz Specialist
Diagnostic Checks in Plymouth
Find the Fault Fast with Data Driven Testing
When a warning light comes on or your car starts behaving differently, it is tempting to clear the code and hope the issue goes away. Modern vehicles are complex and need the right tools, data and procedures to diagnose faults correctly.
Guesswork and part swapping can waste time and money. At MB Motor Services Ltd, we use a methodical test plan to identify the true cause, explain your options and fix the fault right first time.
When to Book a Diagnostic Check
If you notice any of the following, book a diagnostic assessment as soon as possible:
- Engine management, ABS or airbag warning lights
- Loss of power or limp mode under load
- Rough idle, stalling or hard starting
- Poor fuel economy or strong fuel smell
- Misfire, hesitation or flat spots when accelerating
- Overheating or cooling fan running constantly
- Battery drain or charging light on the dashboard
- Noisy or unresponsive sensors such as MAF or lambda
- DPF or EGR-related messages and reduced performance
What a Diagnostic Check Includes
Every car and fault is unique, so we tailor our process to your symptoms and vehicle history. A typical diagnostic session may include:
- Fault code read and freeze frame analysis
- Live data evaluation from key systems while idling and on a road test
- Visual inspection of wiring, connectors and vacuum lines
- Targeted electrical testing of sensors and actuators
- Smoke testing of intake or vacuum systems to find hidden leaks
- Fuel trim and misfire analysis to confirm the cause, not just the symptom
- Battery, charging and starting system checks
- Verification drive after repair to confirm a stable fix
Specialist Knowledge for VAG and Mercedes
We specialise in the VAG group and Mercedes, so we understand the details that matter, from service modes for electronic parking brakes to platform-specific sensor calibration and coding.
Book Your Diagnostic Check in Plymouth Today
If you have a warning light, an intermittent fault or a loss of performance, book a diagnostic check with MB Motor Services Ltd. You will get expert fault-finding, quality parts and careful workmanship from a friendly local team that cares about doing things right. Contact us to arrange your diagnostic assessment and drive with confidence on every journey.
How it works
Book Online in 3 Easy Steps
We’ve made it easy for you to book with us, make a booking in minutes so you can get on with your day!
Enter your car registration number
This is so we can provide accurate pricing for your make and model
Choose a service we offer
We provide transparent pricing, so you know how much you’ll be spending before the day of the appointment
Enter your details and wait for confirmation
We will call you to confirm your booking as soon as we can - Don’t worry, if you miss our call the booking is still in our diary!