Massachusetts Registry of Motor Vehicles extends expired inspection sticker grace period Share Updated: 2:34 PM EDT Apr 13, 2021 march 2021 inspection sticker Share Updated: 2:34 PM EDT Apr 13, 2021 The Massachusetts Registry of Motor Vehicles said it is extending a grace period for some motor vehicle inspections, as the company it contracts with continues to experience issues following a malware attack.Motor vehicles with expired inspection stickers from March 2021 a blue “3” sticker and April 2021 a blue “4” sticker are allowed until May 31 to get a new sticker. Newly purchased vehicles registered on or after March 23, 2021, should be granted until April 30 to obtain an inspection. Newly purchased vehicles must typically be inspected within seven days of registration.Customers who recently had an inspection rejection and are in the 60-day free retest window will be afforded one extra day for each day Applus’s system remains un