richard ulrich prefers regular, he too hears the siren song of higher grade gas...(sot-richard ulrich/driver)"uh i think the octane level, yeah i think so, makes the engine run better, i think it runs cleaner with the higher octane,"(natsot-john nielsen/aaa)"i think it's easy to believe that something that is premium sounds like a >> the octane level. i think so. designed to run on regular gasoline, using the premium fuel or the 93 octane isn't going to make it run better, have better fuel economy, or have lower emissions."(gfx)aaa looked at cars with a v-6 (2016 dodge charger), a v-8 (2016 toyota tundra) and four cylinder engines (2016 mazda 3) and found 'no benefit' to using a higher level of gas than was called for by the manufacturer. triple-a estimates 16.5 million drivers mis-fueled their cars by upping the octane unnecessarily last year...costing them an extra 2.1 billion dollars.only about 16% of vehicles on the road typically high performance or luxury cars.another 10% run best on mid-grade, while 7 in aaa estimates 16.5 million drivers ms. fueled their car

richard ulrich prefers regular, he too hears the siren song of higher grade gas... (sot-richard ulrich/driver) "uh i think the octane level, yeah i think so, makes the engine run better, i think it runs cleaner with the higher octane," think it's easy to believe that something that is premium sounds like a treat." aaa's john nielsen... (sot- john nielsen/aaa) "but the truth is if your car is designed to run on regular gasoline, using the premium fuel or the 93 octane isn't going to make it run better, have better fuel economy, or have lower emissions." (gfx) aaa looked at cars with a v-6 (2016 dodge charger), a v-8 (2016 toyota tundra) and four cylinder engines (2016 mazda 3) and found 'no benefit' to using a higher level of gas than was called for by the manufacturer. triple-a estimates 16.5 million drivers m-f unnecessarily last year...costing them an extra 2.1 billion dollars. only about 16% of vehicles on the road require premium gas - they are typically high performance or luxury cars. another 10% run best on mid-grade, while 7 in 10 cars on the road only need

. >> richard ulrich prefers regular but he hears the siren's son of higher gas. >> i think the octane helps it run better. >> i think it's easy to believe that something that says >> if your car is designed to run on regular gasoline, using the premium fuel isn't going to make it run better, get better fuel economy or have better emissions. >> reporter: aaa looked at v-8, b6 and four-cylinder engines and found no benefit to using a higher level of gas and what was called for by the manufacturer. aaa estimates 16.5 million drivers upped unnecessarily, costing them an extra $2.1 billion. only about 16% of vehicles on the road require premium gas. they are typically high performance or luxury cars. another 10% run best on midgrade. seven in 10 cars only need regular. the american petroleum institute, which represents the gasoline industry agrees most cars run just fine on regular washington. >> aaa says using premium gas won't hurt your car but if the >>> breaking news right now. highway 119 is closed at 63rd street eastbound toward longmont due to an overturned tanker. you're looking at

. >> reporter: richard ulrich prefers regular but he too hears the siren song of higher grade gas. >> i think the octane level, yeah. i think so. it makes it run better. i think the engine probably runs cleaner with a higher octane. >> i think it's easy to believe that something that says premium sounds like a treat. >> reporter: aaa's john nielsen. >> but the truth is if your car is designed to run on regular gasoline using the premium fuel or 93 octane isn't going to make economy or have lower emissions. >> reporter: aaa looked at cars with v-6, v-8 and 4-cylinder engines and found no benefit to using a higher level of gas than what was called for by the manufacturer. aaa estimates 16.5 million drivers misfueled their cars by upping the octane unnecessarily last year, costing them an extra $2.1 billion. only about 16% of vehicles on the road require premium gas. they are typically high-performance or luxury cars. mid-grade. while 7 in 10 cars on the road only need regular. >> consumers if they stick with what the owner's manual recommends, they're going to be fine and save some mone

. >> reporter: richard ulrich prefers regular but he too hears the siren song of higher grade gas. >> i think the octane level, yeah. i think so. it makes it run better. i think the engine probably runs cleaner with a higher octane. >> i think it's easy to believe that something that says premium sounds like a treat. >> reporter: aaa's john nielsen. >> but the truth is if your car is designed to run on regular gasoline using the premium fuel or 93 octane isn't going to make economy or have lower emissions. >> reporter: aaa looked at cars with v-6, v-8 and 4-cylinder engines and found no benefit to using a higher level of gas than what was called for by the manufacturer. aaa estimates 16.5 million drivers misfueled their cars by upping the octane unnecessarily last year, costing them an extra $2.1 billion. only about 16% of vehicles on the road require premium gas. they are typically high-performance or luxury cars. another 10% run best on while 7 in 10 cars on the road only need regular. >> consumers if they stick with what the owner's manual recommends, they're going to be fine and s

richard ulrich prefers regular, he too hears the siren song of higher grade gas..."uh i think the octane level, yeah i think so, makes the engine run better, i think it runs higher octane," octane,""i think it's easy to believe that something that is premium sounds like a treat." aaa's john nielsen..."but the truth is if your car is designed to run on regular gasoline, using the premium fuel or the 93 octane isn't going to make it run better, have better fuel economy, or have lower emissions."aaa looked at cars with a v-6 a v-8 and four cylinder engines and found 'no benefit' to using a higher level of gas than was called for by the estimates 16.5 million drivers mis-fueled their cars by upping the octane unnecessarily last year...costing them an extra 2.1 billion dollars.only about 16% of vehicles on the road require premium gas - they are typically high performance or luxury cars.another 10% run best on mid-grade, while 7 in 10 cars on the road only need regular. the american petroleum institute, which represents the gasoline industry, agrees most cars regular 87 .

. >> reporter: richard ulrich prefers regular but he, too, hears the siren song of unleaded gas. >> i think so. runs better. i think the engine probably runs >> i think it's easy to believe that something that says premium sounds like a treat. >> reporter: amount aaa's john nielsen. >> it isn't going to make it run better. you'll have lower emissions. >> reporter: aaa looked at cars with v-6, v8 and engines that showed no benefit than what was called for by the manufacturer. $16.5 million misfueled their car by up be the octane unnecessarily, cost them an extra $2.2 billion. only about 16% of cars on the road require premium gas. they're typically high performance luxury cars. another 10% run best on midgrade. while 7 in 10 cars on the road only need regular. >> if they stick to what they use, they're going to be fine and save money. it's not going to hurt your car. it's not going to hurt your performance you're just not going to see a lot of benefit outside of it from most drivers. we talked to the american petroleum institute who represent the gasoline industry, they agree. >> that