Year 2006
Class 321 130 cost factor 10 running cost factor
£921,289 cost £5,315 per month running cost
Class 334 120 cf 10 rcf
£854,572 cost £4,450 per month rc
Class 320 110 cf 10 rct
£778,552 cost £4,429 per month rc
So the cost will arise by the cost factor*inflation me thinks, with the running cost arising due to some connection with cost factor, running cost factor, inflation and the type of engine (electric or diesel). As for the actual equation i hand that over to someone else
