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If you own or plan to own a car in Japan, you will hear the word shaken (車検) early and often. It is Japan's mandatory vehicle inspection — a government-required check that every car must pass to stay legally on the road. Miss it, and driving becomes illegal. Pass it, and you get a fresh two-year window of peace of mind. This guide explains everything a beginner needs to know: what shaken is, when it's due, what gets checked, what it costs, and how to choose where to get it done.
What Is Shaken and Why Is It Required?
- •Technical inspection covers brakes, lights, tyres, emissions, underbody, and body/glass.
- •Compulsory liability insurance is renewed for 24 months at a nationally fixed rate.
- •Vehicle weight tax and inspection stamp fees are paid to government at the same time.
Shaken (車検, literally 'vehicle inspection') is Japan's official roadworthiness certification system, operated under the Road Vehicles Act (道路運送車両法). Every motor vehicle registered in Japan must pass shaken at regular intervals. The inspection verifies that the car meets safety and emissions standards set by the Ministry of Land, Infrastructure, Transport and Tourism (国土交通省, MLIT).
Unlike a simple annual safety check in some countries, shaken combines a thorough technical inspection with mandatory insurance renewal and tax payment — all wrapped into one event. The certificate (車検証, shaken-sho) must be kept in the vehicle at all times, and a small sticker on the windshield shows the expiry month and year.
Driving with an expired shaken is illegal. Penalties include a fine of up to ¥300,000 and up to six months in prison, as well as suspension of your driving licence for up to 90 days.
The Inspection Cycle: When Is Shaken Due?
The cycle depends on the vehicle type and, for new vehicles, how old the car is:
- New passenger cars (普通乗用車): first inspection at 3 years from the date of first registration, then every 2 years after that.
- Used passenger cars: every 2 years from the last shaken date.
- Kei cars (軽自動車): same cycle — 3 years for new, 2 years thereafter.
- Trucks and buses: often every 1 year once older (varies by gross weight).
- Motorcycles over 250 cc: 3 years new, then 2 years.
Your current expiry date is printed on the shaken-sho (車検証) and on the windshield sticker. You can also check online via the MLIT vehicle recall/inspection portal using your chassis number. It is wise to start preparing one to three months before expiry — shops get busy near popular deadline months.
| Vehicle Type | First Inspection | Renewal |
|---|---|---|
| New passenger car / kei car | 3 years from registration | Every 2 years |
| Used passenger / kei (at purchase) | Carries over from last shaken | Every 2 years |
| Light trucks (小型貨物) | 2 years | Every 2 years |
| Large trucks / buses | 1 year | Every 1 year |
| Motorcycle >250 cc | 3 years | Every 2 years |
What Gets Inspected?
The shaken inspection covers several dozen checkpoints grouped into major systems. Inspectors follow a standardised checklist. Here are the key areas:
- Brakes: pad thickness, disc condition, brake fluid, handbrake effectiveness, and brake force measured on a rolling-road tester.
- Lights: headlight alignment and brightness (measured precisely), tail lights, turn signals, hazard lights, number-plate lights.
- Tyres and wheels: tread depth (minimum 1.6 mm), condition, wheel-nut torque, no visible cracking.
- Steering: play in the steering wheel, power-steering function, wheel alignment check.
- Exhaust emissions: CO and HC levels measured at idle — vehicles must meet the applicable standard for their year.
- Underbody: frame rust, suspension components, CV joints, ball joints, exhaust pipe condition — inspected from a pit or on a lift.
- Body and glass: no cracks in the windshield in the driver's sightline, wipers functional, horn audible, VIN plates intact.
- Safety devices: seatbelts in all positions retract and latch correctly.
If any item fails, the car must be repaired before a certificate can be issued. Minor repairs are sometimes completed on the same day at the inspection facility.
Cost Breakdown: Statutory Fees vs Service Costs
Shaken costs fall into two clear buckets: statutory (legal) fees that are fixed by the government regardless of where you go, and service / repair costs that vary by provider and condition of the car.
Statutory Fees (法定費用) — Fixed Nationwide
- Compulsory automobile liability insurance (自賠責保険, jibaiseki): approximately ¥17,650 for a standard passenger car (24-month period, as of the 2024 rate). Kei cars are slightly lower.
- Vehicle weight tax (自動車重量税, jūryō-zei): varies by vehicle weight and eco-rating. Typical range for a standard 1–1.5 t passenger car: ¥16,400 – ¥32,800 for 2 years. Eco-certified cars pay less; older high-emission cars pay a surcharge.
- Inspection stamp / registration fee (印紙代, inshi-dai): approximately ¥1,800 – ¥2,100 depending on the inspection station type.
Service and Repair Costs — Variable
- Basic inspection fee (検査手数料 / 代行費用): ¥20,000 – ¥50,000 at a dealer; ¥15,000 – ¥35,000 at an independent shop.
- Routine maintenance items: oil change, air filter, wiper blades, brake fluid flush — bundled totals vary widely, often ¥10,000 – ¥60,000 depending on car age and what needs replacing.
- Repairs for failed items: unpredictable; can range from a few thousand yen (bulb) to over ¥100,000 (suspension components on an older vehicle).
As a rough guide, a 5-year-old mid-size passenger car in average condition might total ¥80,000 – ¥130,000 all-in at a dealer and ¥60,000 – ¥100,000 at an independent shop. These are typical estimates only — actual costs vary by car model, weight, age, and condition.
Where to Get Shaken Done: Your Three Options
- •All paperwork and transport handled for you
- •Repairs done on-site using qualified technicians
- •Dealers use genuine OEM parts
- •Convenient — drop off the car and collect it later
- •Total cost: approx. ¥60,000–¥130,000 all-in
- •No appointment at government inspection center needed
- •You drive the car to the government inspection center yourself
- •Pay statutory fees + stamp only — no agency fee
- •Potential savings of ¥20,000–¥50,000 vs dealer
- •Pre-inspection recommended: approx. ¥3,000–¥5,000
- •Online booking via MLIT system required
- •Best suited to cars in good condition with confident owners
You have three main routes to completing shaken, each with different trade-offs on cost, convenience, and control.
1. Dealer (ディーラー車検)
Taking your car back to its brand dealership is the most hands-off option. They handle paperwork, transport to the inspection station, and any repairs using genuine parts. Convenient, but typically the most expensive route. Best for newer cars still under manufacturer warranty or owners who want zero hassle.
2. Independent Repair Shop / Service Chain (民間車検場)
Licensed garages (民間車検場) can conduct the full inspection on their premises without visiting a government inspection station. This is the most popular option — generally cheaper than a dealer, still fully managed for you. Large chains such as Yellow Hat, Autobacs, and regional independents are competitive on price.
3. User Shaken / DIY (ユーザー車検)
Confident owners can take the car directly to a government Vehicle Inspection Center (自動車検査場, run by MLIT) and complete the inspection themselves. You pay only the statutory fees plus the inspection stamp — no agency fee. Potential savings of ¥20,000 – ¥50,000, but you must prepare the car yourself, book an appointment (online via MLIT's system), and navigate the inspection lane. Pre-inspection at a local shop (予備検査, yobi-kensa) for around ¥3,000 – ¥5,000 can confirm the car will pass before your official appointment.
Tips to Keep Costs Down
- Compare quotes early. Contact two or three shops one to two months before your expiry. Prices for the service portion vary significantly.
- Do your own maintenance between inspections. Regular oil changes, tyre rotations, and brake checks reduce the likelihood of costly surprise repairs at shaken time.
- Consider user shaken if your car is in good shape and you are comfortable with the process. The statutory fees are the same everywhere — you only save on the service charge.
- Ask for an itemised estimate (見積書, mitsumori-sho) before authorising any work. Reputable shops will provide this without charge.
- Check for eco-car tax discounts. If your car qualifies for a green tax rate, the weight tax is lower — confirm with your shop or the MLIT table.
- Renew early if needed. You can complete shaken up to one month before expiry without losing any remaining days — the new certificate starts from your current expiry date, not the inspection date.
Related reading
This article was prepared by the Car Care Lab editorial team for educational purposes, drawing on widely published service information, manufacturer guidance, and maintenance videos. Intervals, prices, and procedures are representative guides only — always follow your vehicle's owner's manual, and if you are unsure or the job affects safety-critical systems (brakes, steering, high-voltage EV components), have it done by a certified workshop.