Extensions were granted for 9.58 million vehicles and the DVSA says 1.86m vehicles still haven’t had a new MoT.
It is urging motorists to carry out basic safety checks on their vehicles and is reminding them that an MoT garage is a good place to get their vehicle checked if they are unsure about anything.
NGK – the leading supplier of original equipment (OE) spark plugs, glow plugs and NTK engine management sensors – says garages should be prepared for when these vehicles are eventually tested.
Mark Hallam, Marketing Manager, NGK Spark Plugs (UK) Ltd, said: “As more and more vehicles return to the UK’s roads following the easing of the COVID restrictions, it is vitally important that motorists ensure they are roadworthy and in the best possible condition by getting them checked at their local independent garage.
“When the vehicles that are due an MoT are eventually tested, many thousands will fail on emissions which will lead to increased demand for the replacement of Lambda sensors.”
NGK is the world’s largest manufacturer of Lambda sensors and supplies a market-leading range to the UK aftermarket under the NTK brand name.
There are good reasons why NTK Lambda sensors are the No.1 choice of vehicle manufacturers (VMs) around the world, they are ‘Similar but different’.
NGK says the experience it has in supplying the VMs worldwide allows it to offer exactly the right sensor for every vehicle application.
The company advises distributors to encourage garages to always go with a bespoke OE-quality Lambda sensor and steer well clear of ‘universal sensors’. A ‘universal’ Lambda sensor is designed to cover as many applications as possible by splicing in the connector from the unit being replaced. In theory, this sounds like a good idea. In practice the potential for a mismatch with the vehicle's system or subsequent premature failure is very high.
NGK says distributors should help educate garages by ensuring they fit a new NTK Lambda sensor whenever they replace a vehicle’s catalytic convertor.
A worn or failed sensor can result in drastically reduced control of the fuelling system which could result in increased fuel consumption, uneven running, generally poor performance or failure of an MoT emission test, so replacement is good news for the customer, garage and distributor.
NGK recommends that the function of the sensor is checked every 20,000 miles or annually. The emissions check as part of the current MoT test samples the exhaust gases to monitor the efficiency of the engine, exhaust system and engine control systems. The Lambda sensor is a vital part of this system and its function is therefore influenced by many other components.
A malfunction of an associated part may directly affect the performance of a sensor. An oscilloscope and gas analyser is a much more accurate way of assessing sensor performance than relying on fault codes alone. Garages need to look for slow response times, output range and heater function.
Contaminants from poor quality oils and fuel which remain in the exhaust gases can become deposited on the sensor element affecting its operation. Even coolant from a leaking head gasket can reach the element.
Notes to Editors
About NGK SPARK PLUG:
Worldwide: NGK SPARK PLUG is one of the leading automotive and technical ceramics suppliers, with its corporate headquarters in Nagoya, Japan and sales organisations and production facilities all over the world. The automotive side of the company specialises in the fields of ignition and sensor technology, supplying Original Equipment customers across the globe. For the Aftermarket, its product portfolio comprises spark plugs, glow plugs, ignition coils and leads under the NGK Ignition Parts brand. Under the brand NTK Vehicle Electronics the company offers oxygen sensors (including NOx sensors), exhaust gas temperature sensors (EGTS), mass air flow (MAF) and manifold absolute/boost pressure (MAP) sensors as well as engine speed and position sensors. With around 16,000 employees, the company’s automotive and technical ceramics activities generate a total annual turnover of around 3.5 billion Euros worldwide. NGK SPARK PLUG’s EMEA sales (including its EU, UK, France and Eurasia subsidiaries) represent 26.1% of this global turnover. NGK SPARK PLUG operates on all continents and has 41 group companies, 24 production plants and four Technical Centres.
Aftermarket EMEA: NGK SPARK PLUG has seen significant growth across the Aftermarket since expanding beyond motorcycle parts into the automotive sector in the 1970s. With an outstanding commitment to quality, technology, and research & development the company has become the world’s number one in spark plugs and oxygen sensors, and a leading provider of glow plugs, ignition coils and leads as well as further sensor technology. Organisationally NGK SPARK PLUG’s regional headquarters in Ratingen, Germany serves the Aftermarket across Europe, the Middle East and Africa. In the EMEA region the company has ten group companies and more than 1,000 employees, as well as two production plants in France and South Africa and a Technical Centre in Germany.
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