Your next visit to the technical inspection center is approaching, and you dread the red card. Most refusals are based on visible defects that can be detected at home in less than an hour. Preparing your vehicle for the technical inspection in Belgium is primarily about knowing where to look and in what order.
Regional Differences in Technical Inspection in Belgium Since September 2026
Before touching any bulb, check which region you plan to present your car in. Since September 1, 2026, Flanders has implemented a biannual inspection for all cars over four years old, without any age or mileage conditions. The certificate issued in Flanders remains valid throughout the country.
Brussels and Wallonia maintain an annual basis, with a biannual inspection reserved for vehicles that meet strict conditions. Specifically, a resident of Brussels or Wallonia can have their car inspected in Flanders and benefit from a two-year validity. Several Flemish centers are also anticipating an influx of vehicles from the other two regions.
Another Flemish change to know: the repair period after receiving a red card has increased from 15 days to 2 months. You therefore have more time to correct an unbalanced braking system or replace non-compliant tires before the re-inspection. In Wallonia and Brussels, the period remains shorter. All practical information about centers and appointment scheduling can be found on auto-test.be, allowing you to compare availability by region.
Lighting and Tires: The Two Main Reasons for Refusal at the Technical Inspection
Have you ever noticed that a burnt turn signal bulb goes unnoticed in daily life? At the center, it’s an immediate reason for refusal. Faulty lighting is the number one cause of re-inspection in Belgium.
Check Each Light in Five Minutes
Park facing a light wall, engine running. Activate the low beams, then the high beams. Walk around to check the sidelights, front and rear turn signals, brake lights, and reverse light. Ask someone to press the brake pedal while you observe the rear.
Replace any burnt bulb or one with reduced intensity. On recent vehicles equipped with LEDs, a faulty module can turn off part of the optical unit without triggering a dashboard alert.
Tires: Tread Depth and Compliance
The inspector measures the depth of the main grooves. The legal minimum is 1.6 mm, but a tire close to this limit will be flagged as worn. Also, ensure that all four tires have the same speed rating and size, in accordance with the data on the certificate of conformity.
- Inspect the sidewalls: a bulge, cut, or deformation leads to a refusal, even if the tread is correct.
- Check the pressure when cold, with the vehicle parked for at least two hours. An under-inflated tire wears asymmetrically and skews the braking test.
- Remove hubcaps if any are cracked or poorly attached: the inspector may consider them a dangerous protruding element.
Braking and Suspension: What the Test Bench Reveals
The brake test bench highlights an imbalance between the left and right wheels that you may not necessarily perceive while driving. A significant discrepancy on the same axle results in a red card.
Before the appointment, drive a few kilometers and then brake gradually on a deserted straight line. If the vehicle pulls to one side, a stuck caliper or a blocked brake line is likely the cause. The replacement is cheaper than a re-inspection followed by an urgent second repair.
Also, check the brake fluid level. A low level often indicates very worn brake pads, as the piston moves in the caliper to compensate for the lost thickness. Shock absorbers are also part of the inspection: a vehicle that bounces more than once after a firm push on the fender deserves a visit to the mechanic.
Documents and General Condition of the Vehicle on the Day of Inspection
Forgetting a document delays your inspection and may require you to reschedule. Prepare everything the center requires the day before.
- The registration certificate: for a periodic inspection, only the “car” section is sufficient. For an occasional inspection, both sections (home and car) are required.
- The certificate of conformity (COC), especially for an imported or modified vehicle.
- The previous inspection certificate, if your car has already been inspected.
- Any specific certificate: LPG installation, approved modifications, chassis re-stamping.
The vehicle must be presented empty. Remove anything that is not permanently fixed: unbolted roof box, heavy objects in the trunk, removable child seat. Only one person may remain on board during the inspection.
Often Overlooked Details That Cause a Refusal
The license plates must be readable and properly fixed. An advertising plate cover that partially obscures the characters or the country of origin results in a refusal. Check that the windshield does not have any cracks in the driver’s line of sight. An impact of less than two centimeters outside the wiper sweep area is generally tolerated, but beyond that, replacement is necessary.
Also, consider the mirrors: a cracked mirror or a missing exterior mirror constitutes a major defect. The exhaust must not have any holes or audible leaks, which you can test with the engine idling by passing your hand (without touching) near the joints.
A successful technical inspection rarely hinges on heavy mechanics. It is the bulbs, tires, missing documents, and small visible defects that generate the majority of re-inspections. An hour of home inspection and a methodical walk around the vehicle are usually enough to eliminate most reasons for refusal.