Why choose the RAC for a water pump repair?
At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running. We'll give you results you can rely on at a price you can afford.
A water pump repair for Mercedes vehicles requires specialist tools and workshop facilities, so this work is completed through the RAC Approved Garage Network. Our approved garages service models such as A-Class, C-Class, GLC, E-Class, and EQA, following manufacturer procedures, certified equipment standards and rigorous quality checks. You receive transparent pricing, progress updates and RAC‑backed guarantees.
Book a water pump repair
The water pump helps circulate coolant through your engine, preventing overheating. If your water pump is leaking, making noise, or has failed, a water pump repair can help.
Book a diagnostic
A mechanic will check your car for faults and talk you through any repairs you might need. There are various ways to check for faults, which could include a physical examination or plugging in to check your car’s onboard engine management system.
And it’s not just water pump repairs that we can do for your Mercedes
RAC Approved Garages offer MOTs and services. Our professional mechanics have the expertise and experience to make sure your vehicle is operating safely and efficiently – results you can rely on at a price you can afford.
Try one of our RAC Approved Garages
Wimbledon Car Care
Bismillah Garage Services Ltd
Duke Street Motors
Bennett Auto Services - Bosch car service
Frequently asked questions about water pump repairs
The cost of a car water pump varies due to the cost of the pump itself, and labour involved for installation. We recommend getting a few quotes from different suppliers to better understand the cost you might expect to pay.
If your water pump isn’t working correctly, try not to drive your vehicle until it is fixed. A failing water pump can lead to engine overheating, which can cause severe damage. If you suspect your water pump is failing, it’s best to have it inspected and repaired as soon as possible.
Symptoms of a bad water pump include coolant leaks, an overheating engine, a whining noise from the front of the engine, steam from the radiator, and consistently low coolant levels. If you notice any of these symptoms, get your water pump checked by a professional.
If a car water pump fails, it can lead to your engine overheating. This can cause significant damage to your engine, resulting in costly repairs or even complete engine failure. It’s important to address any issues with your water pump as soon as you’re aware of them to avoid serious damage to your vehicle.
Water pumps typically last between 60,000 and 100,000 miles. However, it's best to follow the manufacturer's recommendations for your specific vehicle. Regular maintenance checks can help identify potential issues early.
The timing belt often needs to be removed to access the water pump, and replacing both at the same time can save on labour costs and prevent future issues. While not strictly necessary, it is a cost-effective way of keeping your car in good condition.
Replacing a water pump can take between 2 to 4 hours, depending on the make and model of your vehicle. More complex vehicles may take longer.
Replacing a water pump can be challenging, especially for those without mechanical experience. We recommend you employ a professional mechanic to perform the replacement and make sure it’s done correctly and safely.
Whether your water pump is covered under warranty depends on the terms and conditions. It’s best to check with your vehicle's manufacturer or warranty provider for details.
Yes, a bad water pump can affect your car's heating system. The water pump is responsible for circulating coolant through the engine and heater core. If the pump fails, it can mean that not enough coolant flows through the engine, causing the heating system to function improperly.
It’s important to use the coolant type recommended by your vehicle's manufacturer. Using the right coolant helps to make sure optimal performance and longevity of the water pump and cooling system. Always check your vehicle's owner manual for the recommended coolant type.
Several factors can cause a water pump to fail. They are mostly caused by poor maintenance or improper use, including:
- Using incorrect coolant
- Contaminated coolant with debris
- Poor-quality water pump materials
- Improper installation
- Ignoring regular maintenance and coolant changes
Signs of a failing water pump bearing include:
- A whining or grinding noise from the front of the engine
- Visible wear on the water pump pulley
- Belt tension or looseness
Browse other top locations across our network in the UK
Filter by