on 24 august 2011, scotrail announced plans to refurbish all the fleet, with the project expected to start in november 2011 and take two years to complete. 334020 was the first to be properly refurbished at kilmarnock's brodie rail works. it was there for 3 months from 3 february 2012 to 2 may 2012. the last unit to receive a full refresh was 334006 which left brodie works on 8 november 2014.