Electric dirt bike makers usually describe endurance as riding time rather than distance. Those claims are useful, but only when you know the conditions behind them. Two claims made under different conditions can't be compared directly.
What changes riding time
- Terrain. Steep climbs, deep sand and mud use far more energy than flat fire trail.
- Riding style and skill. Fast, aggressive riding drains a battery quickly. Stark's own VARG EX table gives faster riders less time than beginners on the same terrain.
- Power mode. Many electric bikes let you limit output, which can stretch riding time.
- Rider and load. Heavier riders and luggage use more energy.
- Temperature and battery age. Batteries typically deliver less in the cold and lose capacity over time.
Read the claim, then the conditions
Look for the test conditions next to any claim. A good claim names the terrain, rider level and power setting. Stark, for example, publishes a table of run times by rider level and terrain for the VARG EX, from under two hours to over six. KTM Australia describes the Freeride E as offering up to three hours of riding without stating test conditions. On our bike pages we show each claim with whatever conditions the maker gives, and say when they're missing.
Battery size: nominal or usable
Battery capacity in kWh is helpful context, but makers don't always say whether a figure is the battery's nominal capacity or the energy you can actually use. When a source doesn't say, we label it as unqualified rather than guessing.
Questions to ask the dealer
- What riding time do local owners actually get on the trails I ride?
- How long does a charge take from the included charger, to 80 per cent and to full?
- What does the battery warranty cover, and for how long?
- Can I buy a spare or replacement battery, and what does it cost?