The same as regular gas they just charge you more for it. No actually it's gas that has been cycled through the cracking process once more and has a higher octane level and a few other goodies added in the process, therefore it's more expensive.
NO.. it does not need premium gas.. You only have to put premium gas in a car which recommends premium gas. I would recommend a fill up with some mid grade gas atleast once a month...
The BMW 323 i takes Premium gas,but can use mid grade as well. premium is preferred.
What color is premium gas
yes premium gas is required
Premium is required
BMW only takes gas rated at octane 91 or higher, and that is Premium at the gas station.
higher OCTANE!
Premium gas
Premium is ok
Absolutely...it will run much worse using non-premium gas.
if you have a turbo engine you need premium gas, look inside your gas tank door and it will tell you what octane your car requires.
premium gas