SYM’s PE 3, also written PE3, is a hybrid scooter concept built around an electric drive motor and a small gasoline engine that generates electricity when the battery runs low. The engine is described as a generator, not as a mechanical drive for the rear wheel. Reports from 2024 and 2025 give different activation thresholds and different electric-range figures, so neither set should be treated as a final production specification.
How the PE3 range extender is supposed to work
The PE3 is intended to address electric-scooter range anxiety without making the gasoline engine the scooter’s direct source of propulsion. In the reported layout, an electric motor drives the scooter; a 3-liter gasoline engine can run a generator to make electricity when the battery is low. That makes it a range-extended electric concept rather than a conventional hybrid in which an engine mechanically drives the wheel.
SoyMotero reported that the concept was shown at EICMA 2023 and included an external charging socket. DIGITIMES later reported support for charging from 110 V and 220 V household supplies. It also described a prospective collaboration with CPC on charging-gun systems at gas stations; that is a proposed charging option, not evidence of a deployed network.
What the reported battery triggers mean
The published descriptions do not establish one definitive generator-start threshold. SoyMotero’s 2024 account says the battery voltage falls from about 75 V to 60 V before the generator activates. In October 2025, DIGITIMES described the engine as starting when battery level drops below 40%. Voltage and percentage are different ways of describing battery state, and the available reports do not explain how the two thresholds relate. They should not be combined into a precise specification.
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How the reported range figures changed
The numbers vary between the early concept coverage and the later technology report. The table preserves that distinction: the 2024 figures are SYM claims relayed by the outlets, while the 2025 figures are attributed by DIGITIMES to internal testing. Neither account is an independent road test.
| Measure | 2024 concept coverage | October 2025 report |
|---|---|---|
| Electric-only distance | About 35 km, reported as a SYM claim by SoyMotero; Gizmochina also reported around 35 km. | Approximately 58 km, attributed by DIGITIMES to internal testing. |
| Hybrid fuel efficiency | About 90 km/L in a stated calculation associated with a 3-liter tank, reported by SoyMotero; Gizmochina also reported 90 km/L. | About 89 km/L, attributed by DIGITIMES to internal testing. |
| Combined range | Not stated in the cited 2024 accounts. | Around 325 km, attributed by DIGITIMES to internal testing. |
| Battery | Not stated in the cited 2024 accounts. | 1.5 kWh; DIGITIMES identified it as a soft-carbon battery. |
| Fuel tank | 3 liters. | Not stated in the cited 2025 report. |
The 2024 concept report also gave a maximum electric-motor output of 4 kW. The 2025 figures do not establish that the same configuration or test conditions apply to a production scooter. The headline-style idea of roughly 300 km on 3 liters should therefore be read as a reported concept-level range claim, not a verified result from an independent test.
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Who is reported to be developing the system
DIGITIMES reported that Sentec is developing the motor, Shihlin Electric is designing the generator, and CPC Corporation is creating the 1.5 kWh soft-carbon battery. These are reported project roles, not confirmation that production components, suppliers, or a retail product are finalized.
Production plans, price, and availability
DIGITIMES reported a target of mass production in early 2027 and said pricing had not been decided. A target is not a confirmed launch date: no current retail availability, confirmed price, final specification, or official purchase route is established by the available reporting.
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What the claims do—and do not—tell buyers
DIGITIMES also reported a battery lifespan claim exceeding 10 years. That is a reported design claim, not demonstrated lifetime evidence. Likewise, its range and efficiency figures are internal-test results as reported by the outlet; the 2024 figures are reported manufacturer claims. Real-world range would depend on the final scooter, riding conditions, load, and test method, none of which are sufficiently specified in these reports to make a direct performance comparison.
For now, the PE3 is best understood as a technology concept with a clear operating idea—electric drive supplemented by a gasoline-powered generator—but unresolved production details. The changing range estimates and activation descriptions are reasons to wait for a final specification rather than assume that any single figure represents a model available to buy.
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Sources
- Gizmochina: 2024 coverage of the SYM PE3 concept
- DIGITIMES: October 2025 report on PE3 technology and plans
- SoyMotero: 2024 concept figures and charging details
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