Tern GSD S10 (Gen 3)

A compact longtail cargo e-bike on 20-inch wheels with a Bosch Cargo Line mid motor, a 545 Wh battery with room for a second one, and assistance limited to 25 km/h. It is rated for 210 kg in total and has ABS hydraulic disc brakes and a 10-speed Shimano drivetrain.

Spec analysis: we have not ridden this model. Specs and prices checked 9 Nov 2026.

Top speed
25 km/h (16 mph)
Motor
250 W rated, 600 W peak
Torque
85 Nm
Battery
545 Wh
Range
≈ 95 km real, 98 km claimed
Weight
37.32 kg
Max load
210 kg
Price from
€6,499 · £5,900

Full specifications

Performance
Top speed (EU version)25 km/h (16 mph)
Motor power250 W rated, 600 W peak
Torque85 Nm
Claimed range98 km
Motor and drivetrain
Motors1 (mid-drive)
Motor makeBosch Cargo Line
Assist sensornot published
Pedal assistYes
Throttle above 6 km/hNo
GearsShimano Deore 10-speed
DriveChain
Battery and charging
Battery545 Wh
Removable batteryYes
Charging timenot published
Size and weight
Weight37.32 kg
Max load210 kg
Rider height153–200 cm
Dimensions (L × W × H)192 × 68 × 118 cm
Foldingnot published
Folded size185 × 46 × 88 cm
FrameAluminium alloy 6061
Wheels, brakes and suspension
Wheel size20″
TyresPneumatic
BrakesMagura MT-C four-piston hydraulic disc, 203 mm rotors, with Bosch ABS
SuspensionSuntour suspension fork and Cane Creek suspension seatpost (travel not stated)
Lights, display and features
LightsFront Ignis 700 lm (high/low beam), rear brake light
Turn signalsNo
DisplayBosch Kiox 300 colour display
AppYes
Water resistancenot published
Other featuresBosch ABS, Rear rack (100 kg), Dual-battery compatible, Locking dual-leg kickstand, Frame lock, GPS anti-theft alarm (Flow+), USB-C charging port, Mudguards
Approvals and warranty
EN 15194 certifiednot published

European version, from official sources listed below. “Not published” means the maker does not give that figure; we leave a gap rather than guess.

Where can you ride it?

As sold, the Tern GSD S10 (Gen 3) can be ridden on public roads in 5 of the 5 countries we cover. Verdicts compare the European version's specs with each country's rules. They are not legal advice.

CountryVerdict for this model as sold
🇫🇷 France
checked 9 Nov 2026
Road-legal
  • Helmet required under 12.
🇩🇪 Germany
checked 9 Nov 2026
Road-legal
🇳🇱 Netherlands
checked 9 Nov 2026
Road-legal
🇵🇱 Poland
checked 9 Nov 2026
Road-legal
  • Minimum age 10.
  • Helmet required under 16.
🇬🇧 United Kingdom
checked 9 Nov 2026
Road-legal
  • Minimum age 14.

Sources

  1. www.ternbicycles.com
  2. www.ternbicycles.com
  3. live.ternbicycles.com
  4. www.bosch-ebike.com
  5. www.bosch-ebike.com