What does a timing belt do?
The timing belt, or cambelt, is a vital engine component with a key role to play in keeping your motor running smoothly. It ensures the top and bottom halves of your engine rotate precisely in time with each other.
Essentially, this ribbed rubber belt with teeth synchronises the crankshaft and camshaft’s rotation. It controls the sequencing and timing of the opening and closing of the valves on the cylinders in your engine to provide the right combustion.
Camshafts, made up of the main journals, the lobes (or bulges) and the ends, control the valves in the cylinder head. A rocker head takes the spinning motion of an overhead camshaft and turns it into the movement that opens and closes the valves.
Timing chains essentially perform the same function as cambelts but may be slightly noisier. The chains generally last as long as the vehicle (and generally require less frequent replacing), although the plastic guides they run over may not.
How often should a timing belt need replacing?
There’s no ‘one size fits all’ approach for how often to replace yours—a lot depends on your motor’s age and condition.
There’s also huge variation between manufacturers and different engines. So you might need a new belt after 4 years, or 6, or after driving 40,000 or 100,000 miles. Consult your car’s manual—most manufacturers’ recommendations are based on time passed or miles driven, depending on which elapses first.
However, we’d always suggest treating these recommendations as a maximum, and erring on the side of caution.
The law, vehicle regulations, and your MOT
The timing belt will not be examined at your car’s MOT, but the associated issues of running a car with a faulty timing belt can lead to severe engine damage, which can.
What causes a timing belt to stop working correctly?
Like most car parts, your timing belt will wear out eventually due to cracking, snapping or tearing. Timing belts are also unpredictable, with few warning signs of damage. (Although starting issues and noise may offer clues.) Driving your car infrequently, oil leaks and temperature changes, among other factors, can all play their part.
Symptoms of a malfunctioning timing belt
You hear unusual noises coming from the engine
If a grinding or squeaking noise is being emitted from your engine, it could be a malfunctioning timing belt.
The car won’t start
If your timing belt has broken, this can cause problems with your engine that lead to the vehicle not starting.
Porsche AG is a German automobile manufacturer, established over 88 years ago in 1931, and is renowned for producing high-performance sports cars, SUVs and saloon cars.
Porsche is owned by Volkswagen AG and carries a total equity of over €10billion (according to 2015 figures).
How popular is Porsche in the United Kingdom?
Who wouldn’t want a Porsche? Porsche has been setting standards in high-performance sports vehicles for as long as they’ve been in the industry.
There are currently around 146k Porsche vehicles on the roads in the UK, showing a steady rise in numbers over the past 10 years.
Luxury, high-end performance sports cars
With a back catalogue of historic models too numerous to mention, the current range provides typical 2-seat mid-engine sports cars in the Porsche 718 and Porsche 911 models, luxury touring in the Panamera 4-seat full-size saloon and a luxurious level of crossover driving in the Cayenne and Macan SUVs.
Sporting a selection of SUV models
Given the popularity of the SUV in modern driving, it was only a matter of time until the high-end marques got involved in revving up the performance and presentation.
For example, the Cayenne Turbo can accelerate from 0–62mph in 4.1 seconds with a top speed of 177mph. The hybrid electric model is equally as impressive with figures of 5.0 seconds and 157mph. That should take care of the school run in record time.
Porsche electric: the plug-in hybrid range
In 2010, the both Porsche SUV models and the Porsche 918 were released as hybrid electric versions. Currently, only the Cayenne is available as an electric hybrid, but Porsche is building towards the release of their E-performance range: with the new Taycan all-electric sports car being developed through the Mission E Cross Turismo concept study.
Porsche’s reliability and reputation
Porsche ranked 23rd out of 30 car brands in the What Car? Reliability Survey in 2018. High-end sports cars aren’t renowned for their reliability, so for Porsche to achieve a 90.9% efficiency rate could be seen as quite an accomplishment.
Recent Porsche recalls and reliability issues
Various recalls have been made on Porsche models throughout their motoring history. The following are a list of the most recent in the UK and Europe.
10/05/2019 – Porsche Cayenne (2018)
The shock-absorber forks fitted on the front axle may be defective and could break
22/02/2019 – Porsche Cayenne and Porsche Macan (2017–2018)
The retaining straps on the vehicle’s ski bag may be defective
03/02/2019 – Porsche Cayenne, Porsche Macan, Porsche 911 Carrera and Porsche Panamera (2014–2015)
It is possible that the vehicles do not meet the series standards applicable at the time of delivery
28/09/2018 – Porsche 918 Spyder (2013–2015)
The bolts used to mount the longitudinal and transverse suspension arms may corrode over time
28/09/2018 – Porsche Cayenne (2016–2018)
The seatbelt buckles on the central rear seat are defective
28/09/2018 – Porsche Panamera (2015–2018)
Restricted durability of the coupling rods may affect the functioning of the rear anti-roll stabiliser
25/04/2017 – Porsche 911 and Porsche Boxster (2017)
The windscreen might not be correctly bonded to the bodywork
21/04/2017 – Porsche (11 (2016–2017)
There is a possibility that the passenger airbags were manufactured with faulty components
All recall information sourced from gov.co.uk data.