First Great Western's refurbishment of its Turbo DMU fleet is altering the external appearance of these 1990s built units. Most noticeable is the replacement of the hard to keep clean white roof with a much more suitable mid grey colour. Other modifications include a simplified bodyside colour scheme minus the 'wavy line' logos and LED headlamps. Ex works 166215 partners original condition 165101 at Cholsey on 2 January 2015, as they work the 2P54 13:07 Oxford to Paddington service.