Passing a technical inspection (TO) is a mandatory procedure for all vehicle owners in Russia. According to current legislation, without a valid diagnostic card, it is impossible to issue an MTPL policy, which means it is impossible to legally drive a car. However, many drivers face refusals at service stations due to the car’s non-compliance with established requirements. According to statistics Rostransnadzor, up to 30% cars do not pass inspection the first time - most often due to malfunctions of lighting devices, the brake system or the lack of a first aid kit.

In this article we will look at step-by-step instructions for checking a car before a technical inspection, current requirements for 2026 (including changes in diagnostic regulations), as well as typical errors due to which inspectors send cars for revision. You will learn what documents are needed to pass the inspection, how to check the brakes, steering and lights yourself, and what to do if your car does not pass the inspection. We will pay special attention electronic diagnostic card and design nuances for cars older than 10 years.

1. What documents are needed to pass a technical inspection in 2026

Without correctly completed documents, you will not even be allowed to inspect the car. B 2026 the list remained the same, but the requirements for their relevance became more stringent. Here's what you need to have with you:

  • 📄 Owner's passport (or a power of attorney if the car is represented by another person). The document must be valid - an expired passport will be a reason for refusal.
  • 🚗 Vehicle Registration Certificate (CTC). Check that the data in it matches the VIN number of the car and the owner’s passport.
  • 🔧 PTS (vehicle passport). Required for cars older than 3 years or if the STS is lost. Some inspection centers may require an original and not a copy.
  • 💳 Payment receipt (if payment is made on the spot). From 2023, many points accept only cashless payments - check in advance.

Important: if the car is pledged, you will need bank's consent to undergo maintenance. Also with January 1, 2026 new rules have been introduced for cars with gas cylinder equipment (GBO) - now you need to present installation certificate and current entry in PTS about refurbishment.

⚠️ Attention: If the PTS or STS contains corrections, strikeouts or unreadable entries, the inspector has the right to refuse inspection. In this case, you will first have to restore the documents to the traffic police.

2. Self-check of the car before maintenance: checklist for 10 minutes

Most failures during technical inspection are related to small things that can be fixed in 15–20 minutes. Go through this checklist to avoid annoying mistakes:

Inspect all external lighting devices (headlights, side lights, brake lights)

Check the operation of the horn and windshield wipers

Make sure you have a first aid kit, fire extinguisher and warning triangle

Check the steering wheel play (no more than 10°)

Measure the remaining tread depth of the tires (minimum 1.6 mm for summer tires)

-->

Pay special attention lighting devices. According to statistics, they are the reason 40% failure rate. Check:

  • 💡 Low and high beam — both headlights should burn equally brightly, without blinking.
  • 🔴 Stop lights and dimensions — Have an assistant press the brake pedal while you inspect the taillights.
  • 🟡 Turn signals and hazard warning lights — lamps often burn out or contacts oxidize.
  • 🔦 Fog lights (if any) - should be included only together with the dimensions.

Don't forget about windshield wipers - they must work in both modes (intermittent and continuous). If the wipers freeze or leave streaks, they will have to be replaced. Also check windshield washer — there must be liquid in the tank, and the nozzles must not be clogged.

Right the first time

From the second time

You have to go for revision 2-3 times

Haven't passed MOT yet-->

3. Requirements for tires and wheels: what is checked during maintenance

Tires are one of the key check points. Inspectors pay attention to:

Parameter Requirements for passenger cars Requirements for trucks
Remaining tread depth No less 1.6 mm (summer tires)
No less 4 mm (winter tires)		 No less 1 mm (trailers)
No less 2 mm (trucks)
Availability of studs (for winter tires) Allowed with November to March Allowed all year round (for some categories)
Different tread patterns on the same axle ❌ Prohibited ❌ Prohibited
Visible damage (hernias, cuts) ❌ Not allowed ❌ Not allowed

Please note tire production date - if they have more 10 years, the inspector may require a certificate of fitness for service. Also check tire pressure - it must comply with the manufacturer’s recommendations (usually indicated on a sticker in the doorway or gas tank flap).

⚠️ Attention: If your vehicle has tires with different speed index on the same axis (for example, T and H), this will cause a refusal. The difference is only allowed between the axles (front/rear), but not on one.
💡

Before maintenance, be sure to check the wheel balancing - even a slight imbalance can cause vibration at speed, which will lead to failure under the “vehicle stability on the road” point.

4. Checking the brake system: how to avoid failure

Brakes are the most critical safety element, so they are checked especially carefully. During the technical inspection the following is assessed:

  • 🛑 Braking efficiency — the car must stop on a flat surface without skidding.
  • 🔧 Condition of brake pads and discs — the residual thickness of the pads must be at least 1.5 mm.
  • 🚘 Parking brake performance - the machine should not roll down the slope 23% (for passenger cars).
  • 💨 Brake system tightness — There should be no leaks of brake fluid.

You can check the brakes yourself like this:

  1. Start the car and press the brake pedal several times - it should be elastic, without dips.
  2. When braking at speed 40–50 km/h The car should not pull to the side.
  3. Look at the brake discs through the wheel spokes - there should be no deep grooves or cracks on them.
  4. Check the brake fluid level in the reservoir - it should be between the marks MIN and MAX.

If the brake pads are worn down to metal or the brake discs have critical production (thickness less than 10–12 mm for ventilated discs), they will have to be replaced. Also, refusal will be given if uneven pad wear on one axis - this may indicate a jammed caliper.

What to do if your brakes squeak?

Squeaking brakes are not always the cause of a maintenance failure, but may indicate problems:

- Pad wear to indicator (the metal plate rubs against the disk).

- Ingress of sand or dirt between the pad and the disc.

- Poor quality pads (cheap analogues especially often creak).

If the squeak is accompanied by vibration or poor braking, the pads and discs need to be replaced.

5. Steering and suspension: test criteria

Steering wheel play is one of the most common causes of failure. According to GOST R 51709-2001, for passenger cars the permissible play is no more than 10° (or 25 mm on the handlebar rim). You can check it like this:

  1. Place the car on a flat surface.
  2. Turn the steering wheel left and right until the wheels begin to turn.
  3. If the free play exceeds 2–3 cm, the steering rods/nike require adjustment or replacement.

Inspectors also check:

  • 🔄 Condition of ball joints and silent blocks — there should be no backlashes or cracks in the anthers.
  • 🛞 Shock absorber wear - if the car sways too much after pressing the wing, they will have to be replaced.
  • 🔩 Tightening all fasteners — the bolts of the steering rack, suspension arms and stabilizers must be securely fixed.

Particular attention is paid cars with air suspension - if the system is faulty (for example, the car “sags” on one side), then you cannot pass. Also, refusal will be given if visible damage to the suspension arms or cracks in the springs.

💡

If you have recently changed tie rods or tie rods, be sure to check wheel alignment before maintenance. Incorrect wheel alignment angles can lead to failure under the “vehicle stability on the road” point.

6. Environmental standards and the exhaust system: what has changed in 2026

C March 1, 2026 Requirements for emissions of harmful substances have been tightened. Now for cars Euro-5 and above check:

  • 🌱 CO content (carbon monoxide) - no more 0.3% for gasoline engines.
  • 💨 CH content (hydrocarbons) - no more 100 ppm.
  • 🔥 Smoking of diesel engines — light absorption coefficient should not exceed 0.7 m⁻¹.

If check engine lights up on the dashboard, this automatically leads to a failure - even if the problem is not related to the exhaust. Common reasons:

  • 🔧 Faulty oxygen sensor (lambda probe).
  • 🚗 Clogged catalyst or particulate filter (for diesel engines).
  • ⚡ Problems with ignition system (misfire).

For diesel vehicles with 2026 a mandatory requirement has been introduced: if the machine is equipped diesel particulate filter (DPF), it must be in place and working properly. Removing a filter now equates to illegal tuning and leads to maintenance refusal.

⚠️ Attention: If your car is equipped gas cylinder equipment (GBO), from 2026 it is required to present installation certificate and registration in the PTS. Without these documents, maintenance cannot be completed, even if the system is working properly.

7. Typical mistakes that cause maintenance failures

Even experienced drivers sometimes miss little things that lead to failure. Here TOP-5 errorswhich occur most often:

  1. Missing or expired first aid kit. In 2026, your first aid kit should have:
    Composition of first aid kit 2026
    • Sterile bandage (2 pcs.)
    • Hemostatic tourniquet (1 pc.)
    • Bactericidal patch (10 pcs.)
    • Medical gloves (2 pairs)
    • Artificial respiration mask (1 pc.)
    • Scissors (1 pc.)
    • First aid instructions