How do front brake discs work?
The brake disc is a metal plate mounted on the wheel hub that is clamped between **2 brake pads **when braking is applied; this causes friction and slows the vehicle down.
How often should brake discs need replacing?
As a rough guide, your brake discs should last between 50k and 70k miles, but there are many variables that could affect this, including driver behaviour, the weight you carry and the speed you travel.
The law, vehicle regulations and your MOT
Incorrect brake function, damaged or excessively worn discs or pads are considered unsafe for your vehicle performance and will cause your car to fail its MOT. Nearly 20% of MOT failures are caused by faulty brakes.
What causes brake discs to stop working correctly?
Brake discs wear out over time from continual use. The friction applied by the brake pads, and the intense heat generated, will eventually deform the disc, causing it to become thinner and less effective when performing its job.
Extended use can also cause brake discs to crack, rendering them ineffective. Scars and rust on the disc can be caused by debris thrown from the road and poor weather conditions; this is also effective in reducing the operation of your brake discs.
Symptoms of malfunctioning brakes discs
Braking causes unusual noises
Loud screeching or grinding noises from your brakes is an indication that there is a problem with either your brake discs or pads.
When your car pulls to one side under braking
If only one brake is working correctly, it can cause your car to pull in the direction of the functioning brake.
The car vibrates under braking
Your brake pads or discs could be warped if the pedal vibrates when you press down on it.
The front brake disc shows signs of damage
Look through the wheel for a visual check—if the disc’s surface isn’t smooth, or it displays cracks, grooves, spots or a blue colourisation, then the disc is quite likely damaged.
Your brake warning light on the dashboard is illuminated
If any of your dashboard warning lights are illuminated, the sensor that detects problems or worn out parts and components has identified an issue and activated the system.
Mercedes-Benz is a German global car manufacturer and a division of Daimler AG. They were established over 100 years ago in 1926 and have grown to be the biggest selling premium vehicle brand in the world.
How popular is Mercedes in the United Kingdom?
The number of Mercedes cars on the road in the UK continues to rise, reaching 1.9million by the final quarter of 2018. There are almost 5 times as many Mercedes cars on the road as there were in 1995, showing just how popular this marque has grown to be.
Helping these powerful statistics on their way, the Mercedes A-Class was announced as the 8th best selling car in the UK in 2018. The premium family hatchback is vying for position against the ever-popular VW Golf—the current leader in this class.
Premium executive models of every shape and size
Mercedes deliver hatchbacks, saloons, estates and coupés at every size from their A- to E-Class ranges, as well as executive SUVs, the V-Class MPV, and of course, a more than desirable selection of convertibles and roadsters.
With prices rising to well over £100k, Mercedes cars are a great contender as the executive car of choice.
Mercedes-Benz: Giants of Formula One
Mercedes has always been a keen player within the F1 championship, taking their first 2 titles back in 1954 and 1955. Through the 1990s they joined forces with McLaren as an engine provider and part owner, bringing titles for both Mika Häkkinen and Lewis Hamilton and a constructors championship in 1988.
Their current and outright domination of the sport began in 2014, as a team in their own right, it has featured 5 straight constructors titles, with Lewis Hamilton taking 4 world championships and Nico Rosberg taking the other in 2016.
Mercedes’s reliability and reputation
Mercedes ranked 26th place out of 30 car brands in the What Car? Reliability Survey in 2018 with an efficiency rating of 88%. You could be forgiven for expecting German efficiency to rank higher through the marques, however, most of the top 10 places were occupied by Japanese and Asian manufacturers.
Recent Mercedes recalls and reliability issues
Various recalls have been made on Mercedes models throughout their motoring history. The following are a list of the most recent in the UK and Europe.
25/05/2019 – Mercedes-Benz AMG GT and Mercedes-Benz CLS (2017–2018)
The riveting of the front seat belt housing covers may inadequate under low temperatures
18/05/2019 – Mercedes-Benz x-Class (2017–2019)
Defective operating manual can cause the roof load to be exceeded if a canopy is subsequently fitted
18/05/2019 – Mercedes-Benz Sprinter (2018)
Missing cover on the sliding door of the stowage space
12/05/2019 – Mercedes-Benz E-Class (2018)
The rear door spoiler may not be secured enough due to an adhesive bond
04/05/2019 – Mercedes-Benz C-Class and Mercedes-Benz GLC F-Cell (2017–2018)
The sleep mode functionality of the electronic parking brake within the stability program software may be defective
19/04/2019 – Mercedes-Benz V-Class (2019)
The passenger airbag cover on the instrument panel ins inadequate
19/04/2019 – Mercedes-Benz X-Class (2017–2018)
The foot space lamp on the driver’s side can become detached
13/04/2019 – Mercedes-Benz V-Class Marco Polo (2017–2018)
There is a possibility of red rust corrosion on metallic components of the roof frame reinforcement
All recall information sourced from gov.co.uk data.