Independent inspector · We don't buy or sell cars

Used car inspection before you buy. Don't get a dressed-up lemon.

We check for major accidents, flood damage, rollovers, rolled-back mileage, engine, gearbox, electrics and documents, with expert advice and a guarantee* before you buy. Serving Bangkok, Nonthaburi, nearby provinces and all of Thailand.

From 1,500 THB incl. VAT · No travel fee in Bangkok and Nonthaburi
Keng from Scan2Car listening to a used car engine with a mechanic's stethoscope before purchase
Keng · 20+ years inspecting cars
20+ years
inspecting used cars
10,000+ cars
inspected
Buy-back*
structural guarantee, P3–P4
S2CDiag
our own analysis software
Why inspect before buying

A used car can look perfect and still hide problems worth tens of thousands of baht

A few thousand baht for an inspection tells you what you are buying, gives you room to negotiate, or lets you walk away.

Major accidents

Rebuilt structures affect both safety and resale value.

Flood damage

Electrical faults and rust appear later, even when the car looks fine today.

Rolled-back mileage

A low odometer reading means you pay more than the car is worth.

Engine, gearbox, electrics

Fault codes cleared before the sale show up when we connect OBD.

Why Scan2Car

100% independent

We don't buy or sell cars and take no commission from dealers. The results are yours alone.

Inspected by Keng himself

P3–P4 are inspected by Keng, with advice after the inspection. All vehicle types, including European cars and EVs.

Buy-back guarantee*

P3–P4 guarantee the structure against major accident, flood, rollover and cut-and-weld damage. If we miss it, we buy the car back.

Photos of every finding

Every package includes a PDF report with photos, sent on LINE, so you can decide right away.

S2CDiag technology**

Real-time vehicle data analysed by AI, developed in-house by Scan2Car. Used in package P4.

** Not all models are supported yet; please ask.

Clear prices, VAT included

No extra charges on site and clearly stated travel fees.

What we check

Every system checked, with trained eyes, experience and the right tools

A used car has hundreds of points to check. We group them into 7 main systems and photograph every finding for your report, so you see it for yourself.

Structure and body

The core of every inspection. However good the repair, a major crash leaves traces.

  • Front and rear rails, A–B–C pillars, wheel arches
  • Weld marks, arc marks, cut-and-weld joints, frame pulling
  • Paint thickness on every panel to find repaints and filler

Flood, fire, rollover

Problems that don't show today but follow you for years.

  • Mud and silt under carpets and seat rails
  • Rust on terminals, connectors and bolts under the console
  • Roof, pillars and door frames after a rollover

Engine and gearbox

We listen, look for leaks and feel how the car actually drives.

  • Mechanic's stethoscope for abnormal engine noise
  • Engine oil, coolant, signs of leaks
  • Gearbox jerks, slipping or slow shifts (test drive in P3–P4)

Electrics and electronics

Modern cars fail electrically more often than mechanically.

  • Battery, alternator, charging voltage
  • Air-con, windows, cameras, screens, sensors, every switch
  • Dashboard warnings and fault codes in control units

Suspension, tyres, brakes

Safety, and the costs that usually come right after you buy.

  • Shocks, bushes, ball joints, engine mounts
  • Tread depth, tyre age, discs and pads
  • Underbody photos showing rust and impacts

Mileage and documents

Make sure the car is the same one in the registration book.

  • VIN and engine number match the registration book
  • Wear compared with the odometer reading
  • P4: in-depth mileage and service history check

EV / hybrid battery

The heart of an electric car and its most expensive part (P3–P4).

  • Battery state of health (SOH) in percent
  • Voltage of every cell, to find weak or abnormal cells
  • Battery temperature and charging system
Why we connect an OBD2 scanner

Problems you can't see. The car's computers keep a record of them.

Modern cars have control units (ECUs) watching the engine, gearbox, brakes, airbags and electrics all the time. When something goes wrong, they store a fault code, even if no warning light is on yet.

The most common trick in the used car market is clearing codes before the sale. The warning light goes out and the car looks fine, but the problem is still there. An OBD2 scanner shows whether the system was recently reset.

Looking onlyWith OBD2
No warning light, so it must be fineSee the codes hidden in the control units
No idea if codes were just clearedKnow whether the system was reset before the sale
Engine sound at idle onlyReal values while the engine runs (live data · P3–P4)
EV: only the battery % on the dashboardBattery health (SOH) and every cell voltage (P3–P4)
Guessing from symptomsHard data and more accurate repair estimates

OBD2 is included from package P2 · P3–P4 add live data during the test drive

OBD2 scanner reading fault codes from several control units of a Mercedes-Benz, and the full control unit map of a Toyota C-HR Hybrid
Real inspections · Top: fault codes in the door modules and rain sensor (Mercedes-Benz) · Bottom: full control unit scan (Toyota C-HR Hybrid)
Live data from a Toyota Camry exhaust system and an EV battery check on a GWM ORA Good Cat showing state of health and every cell voltage
Top: live values with the engine running (Toyota Camry) · Bottom: EV battery SOH and cell voltages (ORA Good Cat)
Dealer-level diagnostics · Packages P3–P4

For some brands, we use the same software as the dealer workshop

A generic OBD2 scanner reads only basic data. For some brands we use dealer-level diagnostic software that reaches every control unit in the car.

  • Read codes from every module: engine, gearbox, ABS, airbags and electrics
  • In-depth data that generic scanners cannot read
  • More accurate assessment of European cars and EVs

Used in P3–P4 · e.g. Mercedes-Benz (XENTRY) and BMW (ISTA+) · Ask about other brands on LINE @scan2car

Inspecting a Mercedes-Benz with XENTRY and a BMW with ISTA+, the same software used by dealer workshops
Real inspections · Top: XENTRY (Mercedes-Benz) · Bottom: ISTA+ (BMW)
Scan2Car's own technology

S2CDiag is more than a scanner. It records how the car behaves from start... to finish.

S2CDiag is software Scan2Car built from years of collected data and a real understanding of how cars work. It applies in-depth AI analysis to assess the engine, gearbox and electrics, to find faults today and those coming in the future.

A normal scannerLike taking one "photo". You see the car only at that moment, and you're left guessing.
S2CDiagLike recording a "video" of the whole story. It sees the full system and analyses it for you.
  1. Step 1 · Engine offBefore start-upBattery condition, resting voltage and the status of every control unit
  2. Step 2 · Start-upThe first secondsHow far the voltage drops while cranking, and whether the engine starts cleanly
  3. Step 3 · IdleWarm-upIs the idle steady, does temperature rise normally, does the alternator supply enough?
  4. Step 4 · Test driveReal drivingGear changes, response under acceleration, heat and electrics under load

AI turns the data into a condition report anyone can understand

All the data is compared with how a healthy car behaves, to find early signs of wear before symptoms appear. You know before you buy whether the car is truly sound or about to cost you money.

Results come as a score out of 100 and an S / A / B / C / D grade for every system. Easy for anyone to read.

Enginecondition and signs of wear
Gearboxbehaviour while driving
Electricsbattery, alternator, control units

Used in package P4 S2C Signature · Selected brands supported for now; ask about your model on LINE before booking

S2CDiag screen showing a vehicle health score of 86/100, grade A, with scores for fuel mixture, cooling, idle, ignition and exhaust/O2 sensors
Real S2CDiag screen · vehicle health score and engine analysis by item
Packages and prices

4 levels of used car inspection

P1–P2 are carried out by our skilled technicians, for Japanese cars and pickups at lower prices. P3–P4 are carried out by Keng himself, for every vehicle type, with a structural guarantee. All prices include VAT.

Choose in one question
Only worried about crashes / floods → P1
Want the engine checked too, on a budget → P2
Ready to buy, want an expert + guarantee → P3
Expensive or European car, or future costs → P4
P1 · skilled technician

Structure Check

1,500 THB / car
Up to 45 min · report immediately

Structure only, engine not started

  • Structure: major accident, flood, rollover, cut-and-weld
  • Paint thickness around the car
  • VIN and documents
  • PDF checklist + photos on LINE
Book P1
P2 · skilled technician

Essential

2,290 THB / car
Up to 45 min · report immediately

Everything in P1, plus

  • Engine check at idle
  • Electrics around the car and tyre condition
  • OBD fault code scan
  • Underbody photos
Book P2
Recommended
P3 · inspected by Keng

Expert

3,490 THB / car
Up to 1.5 hrs · report within 3 hrs

Everything in P2, plus

  • Test drive and ECU live data
  • On-site mileage assessment
  • Initial repair cost estimate
  • Advice from Keng after the inspection
  • Structural buy-back guarantee*
Book P3
P4 · inspected by Keng

S2C Signature

5,490 THB / car
Up to 1.5 hrs · report within 3 hrs

Everything in P3, plus

  • S2CDiag analysis**
  • In-depth mileage check
  • Service history check
  • Detailed repair cost estimate
  • Future maintenance plan
Book P4

European cars and EVs: P3–P4 only · *Structural guarantee for P3–P4 only, covering major accident, flood, rollover and cut-and-weld damage present on the inspection date, under company terms · **S2CDiag does not support every model yet; please ask

Sample report

Results on LINE as soon as we finish, with a Thai / English PDF report

No waiting and nothing to remember. Every checked point is documented, ready for your decision, your price negotiation, or to share with your family.

  • Instant summary on LINEPass / pass with observations / not recommended, with findings listed point by point. Read it in a minute.
  • Bilingual PDF, Thai / EnglishEvery item in both languages, easy to share with foreign buyers or a finance company.
  • Paint thickness mapSee at a glance which panels were repainted or filled, against the real limits for that model.
  • Critical items marked ★If a starred item is found, we don't recommend buying. No guesswork.
  • Photos of every findingLocation and notes for each, plus the inspector's comments.
Sample P2 inspection report page 1: paint thickness map and checks for documents and structure
Page 1 · paint thickness, documents, structure
Sample P2 inspection report page 2: tyre tread, engine, electrics, OBD2 and the inspector's summary
Page 2 · tyres, engine, electrics, OBD2

Sample from package P2 (fictional vehicle data) · P1–P2 receive a checklist report · P3–P4 receive a full report

Compare every package

ItemP1 · 1,500P2 · 2,290P3 · 3,490P4 · 5,490
InspectorTechnicianTechnicianKengKeng
Vehicle typeJapanese / pickupJapanese / pickupAll typesAll types
Structure: accident, flood, rollover, cut-and-weld✓✓✓✓
Paint thickness · VIN · documents✓✓✓✓
Engine at idle · electrics · tyres–✓✓✓
OBD code scan · underbody photos–✓✓✓
Test drive · ECU live data––✓✓
Mileage––On-site assessmentIn-depth check
Repair cost estimate––InitialDetailed
S2CDiag · service history · maintenance plan–––✓
ReportPDF checklistPDF checklistFull reportFull report
Inspection time · report≤ 45 min · immediately≤ 45 min · immediately≤ 1.5 hrs · ≤ 3 hrs≤ 1.5 hrs · ≤ 3 hrs
Structural buy-back guarantee*––✓✓

Upgrade on site

P1 → P2 add 790 · P3 → P4 add 2,000 THB, same car and location (no switching from P1–P2 to P3–P4)

10% off the next car

If the first car fails, your next inspection is 10% off.

20% off the second car

Same location, same day, back-to-back.

Service area

We come to the car, anywhere in Thailand

No travel fee in Bangkok and Nonthaburi. Other provinces are charged by actual distance, round trip from Bang Bua Thong.

Urgent night inspection +1,500For inspections starting after 6 pm, added to the package and any travel fee.
AreaTravel fee (THB)
Bangkok, NonthaburiFree
Lat Krabang, Romklao, Nong Chok, Bang Bon, Suwinthawong300
Samut Prakan, Samut Sakhon, Pathum Thani, Nakhon Pathomup to 500
Ayutthaya, Nakhon Nayok, Samut Songkhramup to 1,500
Suphan Buri, Saraburiup to 2,000
Other provinces (round trip)first 800 km 15/km · beyond 12/km
2nd car upcountry, within 10 km of the firstFree

Tolls and accommodation not included

How it works in 5 steps

  1. 01Add LINE @scan2carSend the model, year, price and a map link to the car
  2. 02Choose a package and timeOur admin helps you pick the right package
  3. 03Let the seller knowSo everything is ready, as our inspector arrives on time
  4. 04On-site inspectionEvery point photographed; upgrade on site if needed
  5. 05Results on LINEPDF with photos, so you can buy or negotiate right away

What customers say

“Really impressed with Keng's inspection. Straightforward and honest about what he found. Contacting him was the right decision, and I'll definitely use the service again.”
Facebook review (translated from Thai)
“Excellent. He checked every system, tested the suspension, explained things I didn't know, and advised on whether the price fitted the car's condition. Worth every baht for the confidence of buying a used car.”
Facebook review (translated from Thai)

A customer wrote a full review on Pantip, from the fear of buying a disguised lemon to having Scan2Car inspect a car found online before deciding.

Read the full review on Pantip (Thai)

Used car tips from Scan2Car (videos in Thai)

All videos on YouTube @KengS2C
Episode 1Checking a used car with bare hands
Episode 2Why every used car should be inspected
Episode 3Demo and test-drive cars can be disguised too
Episode 4How to use a paint thickness gauge

Frequently asked questions

What is the difference between P1–P2 and P3–P4?

P1–P2 are carried out by our skilled technicians and suit Japanese cars and pickups at lower prices; you receive a PDF checklist report. P3–P4 are carried out by Keng himself and include a test drive, a full report and a structural buy-back guarantee.

Why connect an OBD2 scanner when inspecting a used car?

The car's control units store fault codes even when no warning light is on, and some sellers clear codes before a sale. An OBD2 scanner reveals hidden codes, shows whether the system was recently reset and displays live engine data. OBD2 is included from package P2.

What is S2CDiag and how is it different from a normal scanner?

S2CDiag is software developed by Scan2Car. It records how the car behaves from engine-off, start-up and idle through the test drive, then uses AI to analyse the engine, gearbox and electrics. It is used in package P4 and currently supports selected brands; please ask before booking.

Can you check the battery of an electric car (EV)?

Yes, in packages P3–P4. We read battery state of health (SOH), the voltage of every cell and battery temperature to find weak or abnormal cells, for models our tools support. Please ask about your model on LINE before booking.

Which package do European cars and EVs need?

European cars and electric vehicles are inspected in packages P3 and P4 only.

What does the buy-back guarantee cover?

P3–P4 only. It covers major accident, flood, rollover and cut-and-weld structural damage that existed on the inspection date, under company terms.

Can I upgrade my package on site?

Yes. P1 → P2 for 790 THB and P3 → P4 for 2,000 THB, same car and same location.

Do prices include VAT?

All package prices include 7% VAT.

Can you inspect at night?

Yes. Inspections starting after 6 pm have a 1,500 THB surcharge.

Is there a discount if the first car fails?

Yes, 10% off the inspection of your next car.

How long does an inspection take and when do I get the results?

P1–P2 take up to 45 minutes and the report is sent immediately after · P3–P4 take up to 1 hour 30 minutes and the report is sent within 3 hours after the inspection.

Do you speak English?

Our reports are bilingual (Thai / English). For booking, message us on LINE @scan2car in English and our admin will help you.

Found a car you like? Have us inspect it before you buy. No regrets, total peace of mind.

Send the model, year and price on LINE and our admin will recommend the right package.

Book on LINE Call Keng