I understand that units need time out for maintenance. But given that FCC boast of 12-car peak services do they really need to reduce them to 4-car off peak giving them 2/3rds of the fleet to maintain in the off peak. Bit simplistic arithmetic I know. I suspect that many of the off-peak units will be sat in sidings doing nothing rather than being in a depot being maintained. So the only argument is that the units doing nothing are not clocking up wear and tear requiring more maintenance.
But in the case of FCC they do seem to drastically reduce their capacity for the off peak. A solution to peak time overcrowding is for passengers to travel off peak as I do but FCC do not seem to agree with this. If I look at the Southern services they are nowhere near as overcrowded off peak. Regarding FCC I struggle to get in the coach off-peak but on Southern I am merely looking for a seat.
I do agree that FCC have been somewhat strangled by the DFT but surely this does not need to so drastically reduce capacity off peak.
FCC don't drastically reduce capacity off peak. There are only 4 x 12 coach trains on the TL side each peak; 3 southbound and one northbound am, vice versa pm. Indeed there are more 4 coach services than 12s in the peak.
The diagrams are such that if the 12 car stayed as such all day it would be in the wrong place for the pm peak. So some of them have to be split and stabled so that they are in the right place later in the day.
I also think you are unlucky if you keep catching 4 cars off peak. I will be corrected, but roughly only 1 in 4 Bedford Brightons are 4 car off peak on average, with the rest 8s. Same applies Saturdays.