(26 Jun 2023, 8:45 am)F114TML wrote If it has the hot exhaust light on, you really start to feel it after a few weeks/months (36980 is notorious for it, last time I had it I couldn't get it above 25 past the eye infirmary on the 10, and many months ago I went up Greenbank Drive in it at about 8mph; most buses can at least get up to 15) - could be one of them. Equally, I had 27734 the other night on the 3s and 20s - horrifically slow, particularly uphill but seemed to get better after a while (no exhaust light), seems to be an outlier.

As for the gasbuses, some of them are starting to show their age but a lot of them are really good, very smooth and a fair few have a good bit of kick behind them.