Tern GSD P10 (Gen 3) vs Tern HSD P5i (Gen 3)
Tern GSD P10 (Gen 3) wins on max load, full charge; Tern HSD P5i (Gen 3) wins on everyday range (180 lb), throttle range on hills, range with a 280 lb rider, steepest hill at 8 mph, battery, weight. For a 180 lb rider in everyday riding, the GSD P10 (Gen 3) goes about 29 miles and the HSD P5i (Gen 3) about 33 miles per charge.
Where they differ
A gap under 5% is called a tie: it's inside the model's uncertainty.
| Measure | GSD P10 (Gen 3) | HSD P5i (Gen 3) | Edge |
|---|---|---|---|
| Everyday range (180 lb)16 mph, relaxed pedaling, rolling hills | 29 mi | 33 mi | HSD P5i (Gen 3) |
| Throttle range on hills15 mph, no pedaling, ±4% hills | 19 mi | 22 mi | HSD P5i (Gen 3) |
| Range with a 280 lb riderEveryday scenario | 24 mi | 27 mi | HSD P5i (Gen 3) |
| Steepest hill at 8 mph200 lb rider, throttle only | 9% | 10% | HSD P5i (Gen 3) |
| BatteryRated capacity | 500 Wh | 545 Wh | HSD P5i (Gen 3) |
| PriceBrand store, today | $4,999 | $4,999 | Tie |
| WeightWith battery | 76.4 lb | 61.9 lb | HSD P5i (Gen 3) |
| Max loadRider + cargo | 387 lb | 357 lb | GSD P10 (Gen 3) |
| Full chargeStock charger, empty to full | 3.5 h | 3.8 h | GSD P10 (Gen 3) |
| Top assisted speedBrand spec | 20 mph | 20 mph | Tie |
Range at every rider weight
| Rider | Easy 12 mph | Everyday 16 mph | Fast 20 mph | Throttle, hills |
|---|---|---|---|---|
| 150 lb | 53 vs 60 mi | 31 vs 34 mi | 21 vs 23 mi | 21 vs 24 mi |
| 200 lb | 48 vs 54 mi | 28 vs 32 mi | 20 vs 22 mi | 18 vs 21 mi |
| 250 lb | 44 vs 50 mi | 25 vs 28 mi | 19 vs 21 mi | 16 vs 18 mi |
| 300 lb | 41 vs 46 mi | 23 vs 26 mi | 18 vs 20 mi | 15 vs 16 mi |
GSD P10 (Gen 3) first, then HSD P5i (Gen 3). 70°F, pavement, new battery. Scenarios: Easy cruise: 12 mph, relaxed pedaling, flat; Everyday: 16 mph, relaxed pedaling, rolling hills; Fast commute: 20 mph, relaxed pedaling, rolling hills; Throttle only: 15 mph, no pedaling, hilly.