In short the average weight limit of a scooter in the 150cc class in about 350 lbs or 158 kg. This is the max capacity for everything. Including the rider, passenger, add-on accessories, and weight of anything stored.
While averages are helpful, I was a little surprised to see such differences from some manufacturers. On the low-end, I found a scooter that states it the max weight capacity is only 330 lbs. On the high-end, I found one listing the max weight to be 412 lbs. That’s an 82 lbs difference! Remember, we’re not talking about two different engine classes. All the scooters I looked at were in the 150cc range.
This weight difference got me thinking…
What about the scooter build and design decisions allow one to handle more weight than another. Could it be, general build quality, maybe upgraded suspension, or even a purposeful decision by the manufacturer? I’m not sure, at least yet. As I write this article I’ll be researching as I go and let you know what I find.
The Approach I’m Taking
Naturally, I’m unable to compare all the available 150cc models, so I’ll narrow it down to a few of the more popular scooters and make sure to include the two on the far ends of the weight spectrum. My early research is telling this will not be an easy task. For some reason, scooter makers don’t feel this information is not worthy of printing on the sales brochure. 😛
Here’s the list of 4 of the more popular scooters with max weight capacity and specs:
Yamaha SMAX | Max weight capacity: 353 lbs (160 kg)
- Engine: 155 cc liquid-cooled 4-stroke, SOHC single cylinder; 4 valves
- Horsepower: 14 hp
- L x W x H: 79.9 in x 28.1 in x 51.0 in
- Wheelbase: 55.3 in
- Curb weight: 328 lbs
Honda PCX150 | Max weight capacity: 355 lbs (161 kg)
- Engine: 153 cc liquid-cooled single-cylinder four-stroke
- Horsepower: 13.3 hp
- Wheelbase: 51.8 in
- Curb weight: 295 lbs
Vespa Primavera 150 | Max weight capacity: 412 lbs (187 kg)
- Engine: 154.8 cc single cylinder 4-stroke, 3 valves, catalyzed
- Horsepower: 12.7 hp
- Wheelbase: 52.4 in
- Curb weight: 260 lbs
- Notes: The owners manual stated the max weight limit was 672 lbs, which didn’t seem correct. So I called the dealer and the answer he gave was the max weight included both the curb weight of the scooter AND the rider with accessories. For now, I’ll have to assume he’s correct. Subtracting the weight of the scooter, we’re left with 412 lbs.
KYMCO Super 8 150X | Max weight capacity: 330 lbs (150 kg)
- Engine: 151cc SOHC 4-stroke engine
- Horsepower: 10.3 hp
- Wheelbase: 52 in
- Weight: 232.5
Comparing The Differences
Going through each scooters spec catalog, I’ve picked out and listed some specs I thought would contribute to the weight capacity. Looking at these numbers I’m not sure there’s enough data to tell the whole story. I simply don’t see a correlation between each scooters curb weight, horsepower, and engine type to draw any conclusions.
My hunch is the answer lies in the construction of the scooter’s frame. Unfortunately, none of the manufactures listed any helpful information on their website or in their sales brochures mentioning these details.
For now, I’ll leave you with what I’ve found so far. If I do find out more, I’ll make sure to update this article.