A car parked in a bright, calm service centre in the morning

Mongkol Auto Services · Srinakarin Road

A whole year of car errands, settled in one place

Inspection, gas checks, road tax and insurance, with no driving between offices, so your day keeps its time for what matters more.

Fully licensed

  • Vehicle inspection station
  • LPG vehicle inspector
  • NGV vehicle inspector
  • LPG installation centre
  • NGV installation centre
  • InsureFriend non-life insurance broker

Nobody wants to lose a whole day to car errands

An inspection here, road tax there, insurance on another call. Small tasks quietly take over a day off. That is why, since 2005, we have kept all of it under one roof.

What brings you here

Start with what is on your mind today

Fully licensed

Licensed for every job, and you can check

Vehicle inspection, gas inspection, gas installation and insurance brokerage are all in our group, so work continues here with no hand-offs.

  • Vehicle inspection station
  • LPG vehicle inspector
  • NGV vehicle inspector
  • LPG installation centre
  • NGV installation centre
  • InsureFriend non-life insurance broker
  • Vehicle inspection station (cars up to 2,200 kg and motorcycles)
    Number
    สป. 002/2555
    Licence holder
    Mongkol Auto Services Co., Ltd.
    Valid until
    1 Mar 2027
  • LPG inspection, cars
    Number
    สปร 357-2562
    Licence holder
    Mongkol Auto Services Co., Ltd.
    Valid until
    5 Dec 2028
  • LPG inspection, transport vehicles
    Number
    สปข 356-2562
    Licence holder
    Mongkol Auto Services Co., Ltd.
    Valid until
    5 Dec 2028
  • CNG inspection, cars
    Number
    สธร 346-2562
    Licence holder
    Mongkol Auto Services Co., Ltd.
    Valid until
    5 Dec 2028
  • CNG inspection, transport vehicles
    Number
    สธข 352-2562
    Licence holder
    Mongkol Auto Services Co., Ltd.
    Valid until
    5 Dec 2028
  • LPG installation, cars
    Number
    ตปร/สป 04-2567
    Licence holder
    Weewin International Business Co., Ltd.
    Valid until
    15 Nov 2027
  • LPG installation, transport vehicles
    Number
    ตปข/สป 01-2567
    Licence holder
    Weewin International Business Co., Ltd.
    Valid until
    12 Dec 2027
  • CNG installation
    Number
    ตธร/สป 02-2569
    Licence holder
    Weewin International Business Co., Ltd.
    Valid until
    8 Jun 2029
  • Non-life insurance broker
    Number
    ว00011/2563
    Licence holder
    Insure Friend Broker Co., Ltd.
    Valid until
    29 Jul 2028

Numbers and expiry dates are as shown on the documents held by each company.

Come once, leave with everything settled

One visit

Come once, leave with everything settled

Gas check, inspection, compulsory insurance and road tax can all happen in one visit, so you never have to remember which paper goes where.

Talk to people who have lived with gas cars for over 20 years

Gas car know-how

Talk to people who have lived with gas cars for over 20 years

We began by fitting gas systems and were founded by a mechanical engineer. We can explain where a problem lies, and tell you the work and the price before we start.

Road tax calculator

How much is your road tax this year?

Our own calculator. Enter your vehicle details to see the amount.

Open the calculator

While we look after the car, you can sit in the air-conditioned lounge with a coffee and carry on with your day.

Talk to us on LINE

Real reviews on Google

Reviews from our customers

4.8 stars from 1,143 Google reviews (as of 4 Nov 2026) · All reviews on Google

I come for my car inspection every year. Convenient, close to home, good service and polite staff.

I come for inspection and registration renewal every year. Staff and technicians give good, fast service. Recommended.

I have used Mongkol for vehicle inspection for several years. Good service, a clean customer area and polite staff.

Brought the car for inspection, NGV gas check and road tax, all done in one place. Convenient and quick.

Brought my car for inspection and the annual gas tank check to renew road tax. The service here is very friendly. :)

This is my second visit. The first time I came to ask about the car gas tank system and got very good advice. My tank was extended for 5 more years as the system and tank are in very good condition, never hit or knocked. So I came back for inspection, and I will keep coming.

This is my second car with gas fitted here. All tidy, no problems. You can sit or lie down and wait at the shop all day.

Took my Accord G8 for installation and road tax together. Convenient, and the installation kept to plan. I have used it for 3 weeks with no problems. The waiting room has enough space, and food is a short walk away at the PTT station. Recommended.

My first car had gas fitted here, and so did my second. Anyone wanting gas can trust Mongkol Auto Services. Good service and good standards.

Came to change the gas filter. Good, quick service.

Everything was good overall, especially the repair technician, who explains very well. That is why this is my third time here.

Excellent. Several other places could not find the problem, but at Mongkol the symptom was completely gone, and it saves a lot of gas too.

My second visit. Very complete: vehicle inspection, gas system inspection and road tax. Came before noon and got the disc that evening.

Compulsory insurance and road tax done quickly. Staff speak politely. Good service.

Convenient: one place for registration renewal, compulsory insurance and insurance. An air-conditioned room and not a long wait.

I have been coming for about 7 years. The location is easy to reach and easy to spot. Road tax, inspection, insurance renewal and more all have good service. The lounge is comfortable and the staff are lovely.

Good service. I always come here for road tax, inspection and insurance.

I brought my Honda City for LPG here. Good service with free service throughout. I also did compulsory insurance and car insurance here. Complete, all in one place.

Worth knowing

Common questions

Articles

When you are ready

Not sure where to begin?

Tell us your car model and what is on your mind, and we will tell you what to prepare.

Call

02-759-9400

094-251-4635

LINE

@mong

Opening hours

Mon–Sat 08:00–18:00

299/11 Moo 5, Srinakarin Road, Bang Mueang, Mueang Samut Prakan, Samut Prakan 10270, Thailand

Get directions