Official: What are your real world MPG Numbers
- Thread starter Sonic-Mike
- Start date
CoHPhasor
Active member
What octane you running?
The tune changes if it senses "knock".
Basically, to get the best mileage Chevy uses some aggressive timing/leaning of fuel.
Your Sonic defaults to this nice tune when you fuel up, but as soon as it senses knock it goes to a ****tier, less aggressive, more "safe" map until you refuel.
Low octane is more prone to knock and higher combustion chamber temps are breeding grounds for knock, so if you run low octane and it's been getting hotter out you're likely getting the ****ty map.
Things to help deter this? High octane is easiest. (Can try 89 if you want)
Cooler intake temps, but even more so, a good intercooler to make colder charge air.
AndrewGS
Ultimo Hombre
Shell 93, same as I've used since about a month into ownership and from the same station I usually fill up at.
TheOtherBryan
New member
I've got just over 1700 miles on my 2012 1.8L Manual Hatchback and am averaging 38.5 miles to the gallon. I drive 70% freeway however, but I'm very pleased with this economy. My previous car, a 2007 Civic coupe (manual 1.8L) averaged just under 35 mpg under the same conditions.
TMac
New member
I'm Looking At 30 MPG +/- 1 To 2 Per Fill Up Of The Tank, I All Ways Reset The "Trip Counter" When I Gas It Up. It Get Better MPG During The Week When I'm On The Highway More Often (% Highway To City/Back Roads I Don't Know)The Lifetime # From The "RomoteLink" Is Saying That I'm Getting 34 MPG.
Stratton_Chevrolet_Sonic
HOONIGAN
Well for who doesnt know my car is a 1.4 6 speed hatch with no cats 2.5" exhaust, custom intake, PORTED INTAKE MANIFOLD, trifecta tune etc etc and I drove about 2 hours away 3/4 of it highway cruise set at 72 and getting on it on every on ramp and stop sign I got 40.3-41.5. When I drive around home no highway at all and always wide open I get 30-37
MPG 1st 2500 miles 1.4 turbo
I told the salesman last week when he called that I thought the EPA didn't test this vehicle properly, he told me to wait until it was broken in. I told him I was already averaging 44+ mpg. Most of my driving is county highway at 55, but I had a trip on the interstate after just filling, that I got over 47 mpg. Now I know the up-shift indicator happens real early but these are geat numbers!
I told the salesman last week when he called that I thought the EPA didn't test this vehicle properly, he told me to wait until it was broken in. I told him I was already averaging 44+ mpg. Most of my driving is county highway at 55, but I had a trip on the interstate after just filling, that I got over 47 mpg. Now I know the up-shift indicator happens real early but these are geat numbers!
J T
New member
Do people actually pay attention to that arrow when shifting?
PapaSmurf805
Member
My fuelly number is below. About 50/50 during the week for work. And mostly city on weekends 100% city lol)
SooperSonic
New member
I just took I-95 from Wilmington down to Richmond and averaged about 42MPG. I took route 15 through DE to get home and got better numbers. The tank started out bad. Drove from Newport News to Williamsburg and back with a full car, AC running on blast. The 1.4 isnt happy with a full car at those speeds lol but I made up for it on the return trip on 15 and got about 40MPG.
Impressive little car
Impressive little car
JimmyBuckets
New member
I took a 400 mile or so trip and DIC(K) said I was running about 38.7. This was with no regard to trying to get good MPG, two 100+ lb dogs, gear and two people. Cruise was set at 75-76 most of the way. I would say if I actually wanted to get great MPG I could set the cruise at 65 and easily get 40+ MPG. I average around 26 around town, because I drive like SH*T most of the time. I could get much better if I wanted to.
once you go faster then then 60 (which one time on a 400 mile trip got a 49.8 mpg pen and paper 54 on DCI) numbers start going down quick... espicially at 75-85 mph i get 35-32 MPG
mitdr774
also a dinner prick
84% highway on this last fill up. Made a trip to my parents house today, about 70 miles round trip and most of it at 55 mph with the windows down. I am sure that the trip helped out a lot, but the fill up was an average of 39.7 MPG. I really cant complain about the economy of the 1.8
RichieRocket
New member
SooperSonic, what speed were you doing? Is there ethanol in your fuel?
A week ago I posted my 40.2 mpg on a 480 mile trip averaging 70 mph on the highway (400 miles of the trip was highway) on 7-8% ethanol. Not as good as I was hoping
