If you mean a road-legal 250W electrically assisted pedal cycle, I would thoroughly recommend them. I use mine for a 12 mile (each way) commute with an 800 foot climb, recharging during the day so that I can use full power both ways. It means that I arrive without being soaked with sweat, and turns the climbs from a nightmare into a breeze.
I ride a Halfrauds special
Carrera Subway, bought on the Ride to Work scheme as a salary sacrifice, which brought the cost to my pocket down significantly. Not the lightest, but disk brakes, bolt points for luggage racks, mudguards and sidestand, the same power as any other EAPC, and reasonable battery life - I've done 40 miles on minimum power, but that was with some pushing on beyond 16mph where the motor actually cuts out. You'll quickly find a riding style that suits you, either using the motor just for hill climbs, or putting in the minimum pedal effort to keep it at the cut-off limit. I'm at about 2500 miles and ~125 charge cycles, and am starting to see some slight range loss, so I'm doubtful that it will make it to the claimed 500 cycles. Temperature also plays a part - like all battery tech, they don't enjoy the cold.
The front wheel is quick-detach on the Carrera, and I do occasionally sling it in the back of my car, but if you want folding and portable, the
MiRiDER gets a lot of love from its owners.
One thing, there's a
consultation ongoing about increasing the maximum power to 500W (constant) and allowing twist-and-go without type approval, so you may want to hang on and see how that works out. Anything more... pokey... than 250W sustained / 400W peak is
technically a motorcycle like any other, with all the licensing/registration/VED/MOT/insurance/helmet laws that go with that. However, there's observably very little policing of pedal cycles, or electric transport in general. Most DeliverEats drivers ride
Allegro emotorcycles with 500W motors and twist-and-go throttles, which are essentially what the proposed new limits would cover. However, that would move us out of alignment with the EU limits for EAPCs, so it might end up getting shelved.