Your very best scooter manufacturers are these 8:
1) Piaggio, Vespa, & Aprillia - Basically the same company. Piaggio is the parent company and is the weakest of the 3. Vespa is the Italian legend. They go and go and go, but they're not cheap. Aprillia is the performance brand. These are not the cheapest to maintain when you go to the shop, but you don't have to go to the shop too often with them.
2) Honda and Yamaha. Yamaha doesn't actually have a 150cc entry. Their closest is the 125CC Zuma and it is a great and durable scooter that you can take off road. Honda has the sh150. Great step-through bike with more modern euro looks. It is priced like a Vespa, and outsells everybody in Italy, including Vespa. Looks sharp. Honda also has the PCX 150. It's not a step through bike, but a throw-your-leg-over-it bike with a more sporty look. Performance on this bike is great and it will even handle the interstate since it rides comfortably over short interstate distances at 70mph.
3) Kymco, Genuine Buddy (which is actually PGO) and Sym. All of these are Taiwanese bikes and they have all manufactured bikes for either Piaggio or Honda in the past. Kymco has the Agility 125cc which is a very reasonably priced and easy to maintain scoot. It sits high for a scooter. They also have the People 150cc scooter which is a more Euro looking bike, and it looks really great. The People S200 is also in this category since it is really just a 163cc scooter. These ride nice and look great on the road. The Genuine Buddy is made by Taiwanese manufacturer PGO who used to manufacture for PiaGgiO which is where you get the PGO moniker. These bikes run a little rougher, but they are light, agile, and really really quick. They've got tons of accessories and good dealer support. The Buddy 170i is a fuel injected rocket (at least it's a rocket for a scooter). Sym is also Taiwanese. I would rate them a little below Kymco and PGO, but their engines are ceramic lined and liquid cooled and are very reliable. They are less well known stateside, but they seem to manufacture a solid product.
Honda's scoots are also liquid cooled. This is good if you are stopped long in traffic with no wind moving around you, and prolongs the life of the engine.
So those are the best, and what's best for you is left for you to determine when you test ride them. You need to have room to move your legs, feel in control, not only when you're riding but as you come to a stop, and have a comfortable seat. You need proper arm extension too, because all of these things impact comfort on longer rides. All of the above scooters should get you 30,000 miles + if you maintain them right. Some Vespas have been on the road since the 60's.
For my money I like Honda, Vespa, and Kymco as my top 3.
Walmart/waleworld
what would cause a 150cc scooter to lose power?
I had 150cc scooter, it got 83mpg.
In california
The fuse box on a 150cc scooter is fairly simple to find. Just remove the cover from the battery box and you will find your fuses.
castrol extra 20W50
no
depends in the state that you live.. I'm paying 102.00 a year for a 150cc...
To ride a 150cc scooter in Illinois you need a class L license. To ride anything greater than a 150cc displacement a class M license is required in Illinois.
Ezip
yes and not only 150cc but for 50cc as well, and insurance.
yes