Guide
The IPO: Portugal's inspection clock, from the decree's own table
By Covered Abroad Research Desk · Last verified July 2026
The table for cars
Per the frequency annex of Decreto-Lei 144/2017: private passenger cars (M1) run quatro anos após a primeira matrícula, de dois em dois anos até perfazerem oito anos, e depois anualmente — 4 years' grace, biennial to year eight, annual from then on. That final annual phase is what makes Portugal's schedule the strictest of Europe's big five for older cars; taxis, ambulances and public-transport light vehicles inspect annually from year one under their own rows.
Source: AMT — Decreto-Lei n.º 144/2017 (texto oficial, PDF), read 11 September 2026.
Who runs it
The decree states that the IMT, I.P. administers the system — approving centres, running the risk-classification regime for operators and reporting inspection data to the European Commission every two years. Inspections themselves happen at approved centres across the country; the result attaches to the vehicle's registration, and roadside enforcement (inspeções na estrada) is part of the same decree's machinery.
Source: AMT — DL 144/2017, artigos 17.º–18.º, read 11 September 2026.
60-second check
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Check my policyArriving with a car in Portugal
An imported vehicle joins the Portuguese calendar by its age from first registration anywhere — a seven-year-old import lands one biennial check from the annual phase. The IPO slots into the Portuguese car stack beside the toll transponder question and the licence-exchange clocks; for the rest of the matrix, Spain, Germany, France and Italy each keep their own tables.
Source: AMT — Decreto-Lei n.º 144/2017, read 11 September 2026.