Your CRW is for less than a year because your Commercial Vehicle Roadworthiness (CVR) test was overdue and the new system for issuing CRWs (which was introduced in October 2013) is now aligned to the obligation to have your commercial vehicle tested every year. There is no incentive/benefit in delaying having your vehicle tested.
The CRW is for less than 1 year because the vehicle you purchased did not have a valid CRW at the time of test. Anybody who is purchasing a second-hand vehicle should ensure it has a valid CRW at the time of purchase otherwise the vehicle will be overdue its test and receive a CRW for less than a year.
You can find out when a vehicle is due its CVR Test by clicking on the “Check my CRW” button bellow.
Under current legislation – S.I. No.347 of 2013 Commercial Vehicle Roadworthiness (Vehicle Testing) (No.2) Regulations 2013 (PDF) CRW’s for a 12 month period are only issued where the vehicle is tested on time.