Emissions inspection in 2026: rules and intervals for your fleet

The emissions inspection is the "emissions" part of the periodic technical inspection: smoke opacity for diesel, exhaust gas for petrol, on-board diagnostics readout. Passenger cars and light commercial vehicles take it at 4 years then every 2 years; combustion vans add an annual emissions visit. Failure to have it done: a €135 fine and possible immobilisation.

For a fleet manager, the technical inspection is not a formality: an uninspected vehicle can no longer be driven legally, its insurer may contest cover, and the company faces a fine per vehicle. On a fleet of 50 vans over four years old, that means about 50 appointments a year: 25 periodic inspections and 25 emissions visits.

What is the emissions inspection?

The periodic technical inspection of light vehicles, defined by the French order of 18 June 1991 as amended, covers 133 points across 9 functions: identification, braking, steering, visibility, lighting, axles and tyres, chassis, equipment, and nuisances — pollutant emissions and noise. The "emissions inspection" refers to that last function.

There is no standalone emissions inspection for passenger cars: it is built into the technical inspection. For light commercial vehicles, however, an additional technical visit devoted to emissions falls each year between two periodic inspections.

What the inspector actually measures:

• Diesel engines: smoke opacity under free acceleration, expressed in m⁻¹, compared with the manufacturer's plate value or, failing that, a regulatory limit.

• Petrol engines: carbon monoxide content at idle and at fast idle, and the lambda coefficient.

• On-board diagnostics: readout of the ECU, state of the engine warning light, fault codes relating to emissions control devices — catalytic converter, particulate filter, sensors, EGR valve.

• Visual check: condition of the exhaust line, absence of any removal of the particulate filter or catalytic converter, leaks.

An emissions control system that has been removed or is defective is classed as a major defect and triggers a re-inspection.

What intervals apply in 2026, by category?

Category	First inspection	Then	Additional emissions visit
Passenger car	In the 6 months before the 4th anniversary	Every 2 years	No — included in the periodic inspection
Light commercial vehicle ≤ 3.5 t	In the 6 months before the 4th anniversary	Every 2 years	Yes, annually, for combustion vans; exemption for electricity, hydrogen and compressed air
Motorhome ≤ 3.5 t	4 years	Every 2 years	No
Heavy goods vehicle > 3.5 t and trailers	Within the year following first registration	Every year	Included
Coach, bus	Within the year	Every 6 months	Included
Two-wheelers, three-wheelers, quadricycles	In the 6 months before the 5th anniversary	Every 3 years	No

Source: service-public.gouv.fr and the French ministry responsible for transport.

Three points that matter for a fleet:

1. The van emissions visit is not diesel-only. Article R. 323-22 of the French highway code requires category N1 vehicles to undergo an emissions check within the two months preceding the expiry of a one-year period after each periodic inspection; it applies to petrol vans as well as diesel (ministerial reply, National Assembly). Exempt are vans whose energy source on the registration document is electricity, hydrogen or compressed air; petrol or diesel hybrids and LPG or CNG vehicles remain subject to it.

2. Selling a used vehicle over 4 years old requires a technical inspection less than 6 months old — 2 months if a re-inspection was prescribed. Plan for it when vehicles leave the fleet.

3. The rollout for two-wheelers ends in late 2026 for the existing fleet: vehicles registered in 2020 or 2021 take their first inspection this year, those registered from 2022 before their 5th anniversary.

What are the opacity and emissions limits?

The limit applying to a diesel is first the one on the manufacturer's plate. Where no legible value exists, the inspector applies a regulatory limit that depends on the vehicle's generation.

Engine and generation	Measured quantity	Indicative limit
Euro 6 diesel	Opacity	0.7 m⁻¹ or plate value
Diesel registered from 1 July 2008 (Euro 4 and 5)	Opacity	1.5 m⁻¹ or plate value
Diesel before 1 July 2008 (naturally aspirated / turbo)	Opacity	2.5 m⁻¹ / 3.0 m⁻¹
Euro 3 petrol and later	CO and lambda	CO ≤ 0.3 % at idle, ≤ 0.2 % at fast idle; lambda 1 ± 0.03
Pre-Euro 3 petrol with catalytic converter	CO	≤ 0.5 % at idle, ≤ 0.3 % at fast idle
All vehicles with on-board diagnostics	Warning light and fault codes	Light off, no confirmed code

Any exceedance is classed as a major defect. These limits come from Annex I of Directive 2014/45/EU, transposed into the order of 18 June 1991. They are indicative: the inspection report is what counts, and the manufacturer's value takes precedence where available. Since July 2019, the 20 % tolerance that previously applied to opacity has been removed.

A diesel van close to the limit usually has an identifiable cause: a particulate filter clogged by short journeys, a stuck EGR valve, worn injectors, overdue servicing. It is a maintenance signal before it is a regulatory problem.

What happens if the vehicle fails?

Level	Definition	Consequence
Minor defect	No material effect on safety or the environment	Pass; repair recommended, no re-inspection
Major defect	Compromises safety or the environment	Fail; re-inspection required within 2 months
Critical defect	Immediate danger to road safety	The vehicle may only be driven on the day of inspection; re-inspection within 2 months

Emissions faults fall under major defects. After repair, the re-inspection covers only the failed points; if it passes, validity runs 2 years from the initial inspection, not from the re-inspection.

New in 2026: since 1 January, the inspector checks whether the vehicle is subject to an untreated recall campaign classed as serious by the manufacturer. A "stop-drive" recall left unrepaired is a critical defect (decree no. 2025-1180 of 8 December 2025). For a fleet, that means an ignored recall can immobilise a vehicle at the inspection centre.

What penalties apply if the inspection is not done?

Failure to hold a valid technical inspection is a fourth-class offence under article R. 323-1 of the French highway code:

• a fixed fine of €135, reduced to €90 for prompt payment, increased to €375, and up to €750 before the court;

• possible immobilisation and retention of the registration document, with a 7-day provisional movement permit to reach the inspection centre;

• impounding in the event of prolonged immobilisation.

The fine also applies to a missed additional emissions visit. Indirect risks compound it: an insurer refusing cover on a claim linked to a defect that should have been detected, employer liability for employee safety, and the impossibility of selling the vehicle without a recent inspection. Fines received through ANTAI must also be attached to the right vehicle and the right driver, which requires a reliable assignment history.

Access to low-emission zones depends on the Crit'Air sticker, which follows from the vehicle's Euro standard rather than its latest inspection — but the two subjects meet in the renewal plan.

How to organise a fleet's inspections

A fleet of 100 vehicles over four years old, including 60 combustion vans, generates roughly 50 periodic inspections and 30 emissions visits a year, close to 7 appointments a month, each meaning half a day off the road. Four building blocks make that load manageable.

Keep a per-vehicle register

For each vehicle: category, energy, date of first registration, date of last inspection, result, deadline for the next inspection and the next emissions visit. That is the foundation of fleet compliance. A spreadsheet is enough for 10 vehicles; beyond that, reassignments, fleet entries and exits and re-inspections make manual updating unreliable.

Trigger cascading alerts

An alert at 90 days to plan, 30 days to book, 7 days to remind the driver, then a critical alert once the deadline has passed. Alerts must distinguish the periodic inspection from the emissions visit: their dates do not coincide.

Group the work

Pairing the technical inspection with scheduled servicing — oil change, tyres — saves one immobilisation. The Dadycar Garage maintenance partner network allows those slots to be booked from the software.

Attach inspection reports to the vehicle

The report must be kept and producible during a roadside check or a sale. Filing it in the vehicle's document management, with its expiry date, avoids searching through inboxes and feeds the next deadline directly.

How Dadycar helps

Dadycar automates the tracking of technical and emissions inspections. Each vehicle carries its category, energy and date of first registration; its technical inspection and emissions visit deadlines are tracked in the reminders, with a named owner and an alert before the due date. The inspection report is filed in the vehicle's document management, with its validity date. The compliance tab of the dashboard measures the fleet's regulatory compliance rate. Request a demonstration on your own fleet.

Frequently asked questions

How often must a van take the emissions inspection?

A van under 3.5 t takes a periodic technical inspection at 4 years then every 2 years, plus an additional emissions visit each year between two inspections, within the 2 months preceding the anniversary of the last periodic inspection. Electric, hydrogen and compressed-air vans are exempt from that additional visit.

Is the emissions inspection separate for a company car?

No. For a passenger car, emissions are checked as part of the periodic technical inspection, under the "nuisances" function. Only light commercial vehicles have a separate annual emissions visit. A company car therefore follows the 4-years-then-2-years rhythm, whatever its business use.

What fine applies if a company vehicle's inspection is missed?

A fixed fine of €135, reduced to €90, increased to €375, and up to €750 before the court. The vehicle may be immobilised and the registration document retained. The fine is due per uninspected vehicle, and a missing van emissions visit is penalised the same way.

What is the diesel opacity limit?

The reference value is the one on the manufacturer's plate. Failing that, the limit depends on the generation: around 0.7 m⁻¹ for recent diesels, 1.5 m⁻¹ for Euro 4 and 5, 2.5 to 3.0 m⁻¹ for older ones. An exceedance is a major defect and requires a re-inspection within 2 months.

Does an illuminated engine warning light fail the inspection?

Yes. The inspector reads the on-board diagnostics. An illuminated engine warning light or a confirmed fault code relating to emissions control devices is classed as a major defect, therefore a fail with re-inspection. Diagnose and repair before presenting the vehicle.

Are fleet scooters and motorcycles concerned in 2026?

Yes. The technical inspection for two-wheelers, three-wheelers and quadricycles has been mandatory since April 2024, with a rollout schedule ending in late 2026 for the existing fleet. The steady-state rule is a first inspection before the 5th anniversary, then every 3 years, with no separate emissions visit.