ROAD safety chiefs have urged motorists to service and maintain their vehicles regularly as the average age of cars on the road grows older.
More than 955,000 cars, or just over half of those currently on the road, are now eight years or older, and more likely to suffer problems with their brakes and steering systems, which could pose risks to other road users, the Road Safety Authority (RSA) said.
Chief executive Noel Brett said cars that were not properly maintained were more likely to suffer brake, steering, suspension and lighting problems.
Almost one in 20 fatal or serious road collisions is caused by the road or vehicle condition, and it was essential that motorists maintained their cars.
"While we're very pleased with the reductions in deaths and injuries over the last number of years, we are very concerned about any deterioration in the national fleet," he said.
"We're acutely aware that the age profile has worsened. We're seeing the impact when cars go to the NCT, and at the roadside. It is a cause of great concern."