Yes. In law, e-scooters are motor vehicles (§ 1 eKFV). That is why the same limit applies to them as in a car: anyone who rides with 3.5 nanograms of THC or more per millilitre of blood serum commits an administrative offence (§ 24a para. 1a StVG).
The consequences are the same too. For a first offence, the catalogue of fines provides for €500 and a one-month driving ban. A driving ban can apply to all motor vehicles, so to cars as well (§ 25 StVG).
During the probationary period or under 21, the following also applies on an e-scooter: you may neither use while riding nor set off under the influence of THC (§ 24c StVG).
Anyone who repeatedly comes to the attention of the authorities for driving under the influence of cannabis, whether in a car or on an e-scooter, must expect a medical-psychological assessment (MPU) (§ 13a FeV).
Bicycles and pedelecs up to 25 km/h are not motor vehicles (§ 1 para. 3 StVG). There is no fixed THC limit for them. However, anyone who cannot ride safely because of cannabis commits a criminal offence, whatever the vehicle (§ 316 StGB).
Remember: The e-scooter counts like a car. If you have used cannabis, leave the scooter where it is too.
More on this: What does the 3.5 ng/ml limit mean? · How long after smoking weed can I drive? · Road traffic and the law
Sources
- Straßenverkehrsgesetz (Road Traffic Act, StVG), §§ 1, 24a, 24c and 25
- Elektrokleinstfahrzeuge-Verordnung (Small Electric Vehicles Ordinance, eKFV), § 1
- Bußgeldkatalog-Verordnung (Catalogue of Fines Ordinance, BKatV), annex
- Strafgesetzbuch (German Criminal Code, StGB), § 316
- Fahrerlaubnis-Verordnung (Driving Licence Ordinance, FeV), § 13a