The vehicle licensing figures are compiled from data supplied by the Department of Transport, Tourism and Sport, Driver and Vehicle Computer Services Division. The data provide details on the number of private cars, goods vehicles, motor cycles and other vehicles licensed for the first time in each city and county council, classified by make and size, during a given month.
The release titled 'Vehicles Licensed for the First Time' commenced in January 1993. It replaced the series previously published as 'Particulars of Vehicles Registered and Licensed for the First Time'.
In January 1993, separate systems for vehicle registration and licensing were introduced. The Office of the Revenue Commissioners became responsible for the compilation of vehicle registrations while the Department of the Environment, Heritage and Local Government retained responsibility for vehicle licensing. In January 2008, responsibility for vehicle licensing was transferred to the Department of Transport (which later became the Department of Transport, Tourism and Sport).
For new cars registered from 1 July 2008 motor tax charges are determined on the basis of the CO2 emission level, based on seven CO2 bands.
The licensing process where applicable follows the registration process.
Registration and licensing figures may differ in a given month for a number of reasons, some of which are outlined below:
The question is often asked, which reflects better vehicle sales, licensing figures or registration figures?
In practice, on a monthly basis, the licensing data is probably a better reflection of sales. In some cases, a vehicle may be registered by a dealership in advance of a sale. Whereas, typically, vehicles are only licensed at the point of sale. However, if a vehicle is purchased towards the end of a month, the buyer may wish to defer collecting and licensing it until the start of the following month. So the issue is not clear-cut.
From 31 October 1999, detailed information on agricultural vehicles is no longer published in accordance with Commission Decision 92/157/EEC as upheld on 28 May 1998.
Seasonal adjustment for each taxation class is conducted using a direct seasonal adjustment approach. However, the overall vehicle totals are estimated using the indirect approach, i.e. the ‘Total new vehicles’ is derived by adding all the seasonally adjusted new vehicles taxation classes. The main reason for adopting the indirect approach is to attribute the monthly and annual changes in vehicle licensing to each of its taxation classes. Seasonal adjustment models are developed for each series based on unadjusted data spanning from July 1996 to the current period. These models are reviewed on an annual basis; however seasonal factors are updated each month.
The adjustments are completed by applying the X-13-ARIMA model, developed by the U.S. Census Bureau to the unadjusted data. This methodology estimates seasonal factors while also taking into consideration factors that impact on the quality of the seasonal adjustment such as:
The term 'private cars' in this release, refers to privately licensed vehicles which include hire, fleet and certain commercial vehicles.
The term 'second-hand vehicles' in this release, refers to imported used vehicles which are licensed for use in a public place, in this country, for the first time.
The term 'exempt vehicles' in this release, refers to vehicles which are licensed for the first time but are exempt from liability to pay road tax.
Exempt vehicles can be divided into four main categories:
Vehicles included under this category are mobile machines, forklifts, excavators and diggers.
A vehicle that derives its motive power from a combination of an electric motor and an internal combustion engine and is capable of being driven on electric propulsion alone for a material part of its normal driving cycle.
A vehicle that derives its motive power from a combination of an electric motor and an internal combustion engine, where the electric motor derives its power from a battery that may be charged from the internal combustion engine and an alternating current (AC) electric mains supply and is capable of being driven on electric propulsion alone for a material part of its normal driving cycle.