Yong Sing Motor Works is a one-stop automotive workshop at Block 8 Defu South Street 1, #04-27, in Hougang's Defu industrial estate. Its team of qualified automotive mechanics and technicians handles everything from engine and aircon repair and maintenance work to spray painting, insurance claim services, accessories installations and fabrication works.
Beyond everyday mechanical care, the workshop carries out specialised fittings such as OBU installation and speed limiter installation, and it runs a dedicated AdBlue refill service for SCR-equipped diesel vehicles — including accurate level checks, refills to the correct specification and SCR system inspections, with 10-litre AdBlue packs available for purchase.
Operating hours are Monday to Friday, 9am to 6pm, and Saturday, 9am to 5pm; the workshop is closed on Sundays. To book a slot or make an enquiry, call the office hotline on 9109 2238 or email Enquiries@yongsingmotor.com.
Yong Sing Motor Works operates from Block 8 Defu South Street 1, in Hougang's Defu industrial estate, and has built its offering around a simple idea: one-stop vehicle care. Rather than sending customers to a mechanic for engine trouble, a body shop for paintwork and a separate installer for accessories, the workshop puts a highly qualified team of automotive mechanics and technicians at your disposal for all of it, under one roof.
The service list is broad by design. It spans engine repair and maintenance work, spray painting, insurance claim services, accessories installations and fabrication works — the everyday essentials that keep private cars and commercial vehicles running in Singapore. The approach suits busy owners well: fewer trips, fewer hand-offs, and one team accountable for the whole job.
At the core of the business is mechanical work: engine and aircon repairs, plus general maintenance. Yong Sing is upfront that it aims to do more than just fix your immediate automotive issue — the point is a workshop that looks at the vehicle as a whole. For operators whose livelihoods depend on a van or lorry that starts every morning, and for owners who want one trusted pair of hands, that continuity matters.
The workshop also handles regulated fittings that many owners need but fewer garages advertise. OBU installation and speed limiter installation are both on the list — jobs that matter particularly to fleet and commercial vehicle operators who must keep their vehicles road-legal. Getting these done at the same workshop that services the engine makes scheduling simpler and keeps the vehicle's service history in one place.
One of the more specialised services is the AdBlue refill. AdBlue — also known as Diesel Exhaust Fluid — is a high-purity urea solution used in modern diesel vehicles fitted with Selective Catalytic Reduction (SCR) systems. Sprayed into the exhaust, it reacts with nitrogen oxides (NOx) when heated, forming harmless nitrogen and water and helping to reduce emissions.
Yong Sing's trained technicians perform accurate AdBlue level checks, refill to the correct specification, and inspect the SCR system for leaks and warning indicators. The service is pitched as fast, reliable and transparent, keeping SCR-equipped vehicles compliant and performing at their best. Drivers who prefer to top up themselves can also purchase AdBlue in 10-litre packaging directly from the workshop.
The other half of the story is what happens after a bump. The workshop provides vehicle spray painting and accident repair, and it supports customers through insurance claims — often the most confusing part of any collision. Combining repair and claims assistance in one place spares owners from juggling insurers and separate body shops on their own, and the same team can turn its hand to accessories and fabrication works while the vehicle is with them.
Everything about the setup is practical. The premises sit at #04-27 of an industrial building on Defu South Street 1, and a gallery of past projects on the website gives a sense of the workshop's range. Enquiries go through the office hotline on 9109 2238 or by email to Enquiries@yongsingmotor.com, and the business is GST-registered. It is a straightforward, trade-oriented operation: tell the team what the vehicle needs, and they will tell you how they will put it right.
Hours are Monday to Friday from 9am to 6pm and Saturday from 9am to 5pm, with the workshop closed on Sundays. Whether it is an engine that needs attention, an aircon that has given up, a speed limiter that must be fitted or an AdBlue top-up before a long haul, Yong Sing Motor Works aims to sort it in a single stop at Defu.