An Ebco rep told my local bike shop they are dropping the TransX motor due to reliability problems.
The bike shop has sold a handful and had a couple of problems that have been fixed.
That was while TransX was still on new Ebco bikes.
Spares for TransX, at least from Ebco, are likely to become harder to get now they are no longer using the motor in new bikes.
From what I've read, the early M16 motors had overheating issues, caused by riders expecting too much. I believe TranzX now use heat sensors to help prevent that (EBR site).
The MH-5 MTB is, as Ebco state in their own ebike manual, not a true MTB but a leisure/commuting/touring/light-trail bike: Its for that very reason I bought the road-going version instead. IMHO, it would be naive to believe this lower-cost M16 motor is in the same league or as rugged as a Bosch Performance motor, so hauling excess weight up the side of a mountain is likely a stupid thing to try... although it seems some idiots have.
Yes, I guess Ebco will reduce stock of TranzX parts as these models exceed their warranty, but getting spare motors/parts direct from TranzX's German Service Centre will be no different an issue to those already faced by Bosch system owners.
I get that others have different opinions/experiences, and that's absolutely fine. My own thoughts are this:
If I get 3 years out of this £1000 Ebco ebike and it fails catastrophically, I don't care too much. As the Kalkhoff ebike motor manufacturer spokesman recently stated "Ebike technology is still at the kindergarden stage": The technology (power, weight, range) will have advanced by leaps and bounds, and I'll buy something current and new. On the other hand, if I had a £3000 ebike with a Bosch/Yamaha/Shimano/Brose motor, the inclination would likely be to repair it, however obsolete that technology will by then be. It's simply a choice thing not to spend mega-bucks just yet, and these Ebco ebikes - within their limits - are a great-value interim choice for those they suit.
PS: My personal back-up plan for TranzX spares is that my Brother lives in Frankfurt, just 30 minutes from that TranzX depot. He regularly shuttles Classic MG car parts across the channel for the German MG Owners Clubs there.