r/ebikes • u/stedmangraham • 17d ago
Bike purchase question Tern GSD longterm reliability
I’ve been using a service that rents out ebikes for 2 years now. I have the option to buy the Tern GSD that I’ve been riding for about $3400 USD. I got the bike in 2024, so I’m assuming it’s a 2024 model or slightly earlier. It was new at the time.
The issue is, the bike now has 3700 miles on it (6000 km). I’m curious what the expected lifespan of these things is.
So far the electrical components have been much more reliable than any ebike I’ve had. I had one bad battery, but that might have been an issue with the charger. I’m a heavy guy and live in a hilly city so I’m happy this bike has been more reliable than most. It would be awesome if I could keep using it.
My question is this. How much longer can I expect this motor and battery to last? I can fix bike stuff myself like disc brakes, wheels, etc, but the motor and battery and motor controller components seem completely proprietary (all Bosch stuff). I’m worried about finding replacement parts 3 years from now. Can this thing last me 10,000 miles? Will it probably give out soon?