I've been on the new class 172s three times now in the last few days, but only between Stourbridge and Cradley Heath, so I've only really been on and off quite quickly. Anyway, some things to report:
1 - Seats. Seeing are they are the same as those in the class 350's, they aren't what you call particularly comfortable. They are quite firm to say the least. Plus, because the backrests are quite high, if you're sat in the airline-style seats as opposed to sitting with two seats facing you, it's a little bit difficult to see forward, and that's coming from someone who is quite tall. Plus, it doesn't feel like you're sitting in the seat, like on a class 150, but on top. That said, the extra width is very welcome, which doesn't feel like you're sitting in a baby's pram anymore!
2 - Toilet. I hopped on at Cradley Heath today and thought "I know, I'll see what the toilet is like". So, hopped on the train, waited for it to move and waddled over to the loo and pressed the button to open the door. The door, being one of those big, curved sliding doors, opened about a foot and stopped. Luckily for me, the guard was nearby as he had operated the doors from the near-by doorway, something that you couldn't do with a class 150. He said it had done it several times (typical of Bombardier is suppose!!) and he pushed it round to the open position, it closed itself and when I pressed the button again, it actually opened. Is this really what should be expected of a new train, an incorrectly functioning toilet door? What if I'd been desperate for the toilet?! The interior of the toilet was pretty space-age compared to what you normally see in a train loo around these parts, but what's the point in having a nice easy-to-use interior if you can't get into the thing?!
3 - Noise. Now, I'm not talking about the interior of the train, as that is lovely and quiet, and you can hardly hear the engines at all compared to the class 150s. What I am talking about is when you're stood by it at a station. I got on the Stratford - Stourbridge Service today, so when I got to Stourbridge, it terminated there (obviously!). Walked over from platform 3 to platform 1 and one thing you notice other than how spotlessly clean it's been kept is the tremendous racket coming from the engines when it's stood still. Compared to when a class 150 is stood in platform 3 ready to head back off to Stratford or Dorridge, the noise is not half as loud as a 172. They may have made it a nice quiet ride for the passengers on board the train, but for te passengers standing next to it, it's not particularly pleasant on the ears.
4 - Gear changing. First thing that sprung to mind is that when it changes gears, it doesn't half sound like a bus! But the main thing I'm worried about is that there is a noticeable jolt when it changes gears, not anything that would make you slam your head off the chair in front of you, but still enough to move you slightly. It doesn't particularly bother me now, but will it remain this smooth when it starts to wear in a bit? Or may it smooth out a bit once it's slackened up a bit, seeing as they are probably quite tight and new at the moment.
I think that's about all that I have to mention. I know it sounds like I'm splitting hairs with how small some of these little problems are, but on the whole, i think they are really nice replacements to the class 150s.