Both the 2.0 HDi and 2.2 HDi engines now have 20,000-mile service intervals, up from 12,500 miles.
Specifications have also changed, reflecting changing market tastes, Citroen claims. All Relay panel vans come with unglazed rear doors with glazed versions a no-cost option. Air conditioning is now an £800 + VAT option on chassis cabs and £1,000 + VAT on panel vans.
Robert Handyside, commercial vehicle operations manager, said: 'These latest moves ensure that the Relay range continues to meet customer requirements in the most efficient and economical manner.'