MPG issue? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Chris14RS · 06-20-2014, 01:27 PM

I have a 2014 V6 with CAI intake, x pipe, MRT axle back. I can't get passed 19 mpg even at cruising on the highway at 80mph or lower. I have a 6 speed manual and I can drive it correctly. What could be the possible issue here. Car has 5,900 miles.

dmginc · 06-20-2014, 01:31 PM

check your tire pressure, if they are low on air it will kill your mpg. make sure tires are cold when checking pressure.

DSX_Camaro · 06-20-2014, 01:42 PM

What octane gas do you run? I guess you don't have a catch can. Vacuum leaks? Pour a can of seafoam in the gas?

dmginc · 06-20-2014, 01:47 PM

catch can shouldnt affect mpg, i dont have one yet and i get better mileage city then he does highway.

Chris in the DIC, what does it say your avg speed is?

Da2ss · 06-20-2014, 03:06 PM

Octane is not and issue on the v6 cars.....so I've read over and over

DSX_Camaro · 06-20-2014, 03:59 PM

Quote:

Originally Posted by dmginc

catch can shouldnt affect mpg, i dont have one yet and i get better mileage city then he does highway.

Chris in the DIC, what does it say your avg speed is?

All engines work slightly differently from each other. His engine could go through oil faster than others or have had a different break in and thus need upper intake cleaning. Just spitballing.

Octane matters to an extent. We've discussed it, as you've said, over and over. Saying it doesn't matter at all is like still saying the Earth is flat - perfectly fine if you believe it, but that doesn't make it correct.

Anyway. Let's not make this another V6 gas grade topic. dmginc's question stands - average speed is another good reference.

TommyTheCat · 06-20-2014, 06:01 PM

That's terrible, I Get 33 MPG highway with a 6 speed manual LFX.

Could be related to fuel pressure, map sensors, computer, and a ton of other stuff. Take it to the dealer... check fuel trims and fuel pressure for sure.

What are you getting CITY?

Chris14RS · 06-20-2014, 10:21 PM

I average around 30 mph in the city. I don't beat on my car. I range from 65-80 on the highways. It sticks at 19.8 mpg no matter what. It's crazy!

dmginc · 06-20-2014, 10:26 PM

next time you fill up reset your avg mpg and avg speed and see where it is at next fill up. also, what grade gas (87,89,91,93) are you running just out of curiosity? also check your tire pressure before you go anywhere.

911medic · 06-21-2014, 09:12 AM

OP, I can tell you that my average MPG can vary widely depending on my driving habits. And I don't mean just how I drive, I mean where I drive and when I drive.

In the winter, my mileage takes a significant hit. Colder, denser air plus winter blended fuel plus extra idling time equals crappy MPG, like 18-19.

In the summer, if I commute all the way to work, I average at least 24 MPG I mixed city/highway driving, 31 miles each way (about 70/30 hwy/city).

If I only drive to the train station (about 5 miles away), my average drops to about 19-20 MPG. This route is about 50/50 hwy/city, and about 20‰ of that trip, the car is not warmed up.

A couple of weeks ago, on a freeway trip, with a strong tailwind, I got over 30 MPG over several hundred miles at 75-78 MPH.

Try this: next time you're on the highway, set your cruise control at say, 60 MPH. Be on a flat stretch of road. Then reset your MPG reading. See what your highway MPG is. If it's still that low, I'd say there's a problem, unless you're driving into a 40 MPH headwind.

GDSPEED · 06-21-2014, 09:40 AM

I'm in the same boat as you. never seen more than 20 MPG average in my 14 2LT/RS...I always tell myself im going to drive normal and accelerate slowly to see if it improves my mpg by a lot but it never ends up lasting for the whole tank of gas

dmginc · 06-21-2014, 09:55 AM

what i find strange is that i dont try to get good gas mileage...from a stop im in race mode till i hit the speed limit...then ill cruise in an appropriate gear. that said im averaging 22.7 right now with my avg speed being 33. i reset the avg speed and avg mpg 5 tanks of gas ago.

DSX_Camaro · 06-21-2014, 11:56 PM

Quote:

Originally Posted by dmginc

what i find strange is that i dont try to get good gas mileage...from a stop im in race mode till i hit the speed limit...then ill cruise in an appropriate gear. that said im averaging 22.7 right now with my avg speed being 33. i reset the avg speed and avg mpg 5 tanks of gas ago.

I do this too! And my DIC says I'm averaging 23.5 around town currently. Average speed 32.

DylanH · 06-22-2014, 04:50 PM

I have a 14 1LT RS and I average around 23 mpg with 87 octane and 26 mpg with 91. Mostly driving highway, but mine is stock still.

06-20-2014, 01:27 PM	#1
Chris14RS Drives: RRM RS v6 Join Date: Mar 2014 Location: United States Posts: 204	MPG issue? I have a 2014 V6 with CAI intake, x pipe, MRT axle back. I can't get passed 19 mpg even at cruising on the highway at 80mph or lower. I have a 6 speed manual and I can drive it correctly. What could be the possible issue here. Car has 5,900 miles.

06-20-2014, 01:31 PM	#2
dmginc Drives: In Circles Join Date: Mar 2011 Location: South Carolina Posts: 3,433 View My Garage	check your tire pressure, if they are low on air it will kill your mpg. make sure tires are cold when checking pressure. __________________ CAI Cold Air Intake, BMR Strut Tower Brace, BMR 1.2" Lowering Springs Gen5DIY Fog Lights, Big Worm Third Brake Light/Side Marker Tint (Charcoal) GTS Tail Light Covers, Purple Under Hood Lighting Magnaflow Resonated X-Pipe w/ Muffler Delete Black Plasti Dipped Wheels, Z/28 Spoiler

06-20-2014, 01:42 PM	#3
DSX_Camaro Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013 Location: Orlando, FL Posts: 1,741	What octane gas do you run? I guess you don't have a catch can. Vacuum leaks? Pour a can of seafoam in the gas? __________________ K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler

06-20-2014, 01:47 PM	#4
dmginc Drives: In Circles Join Date: Mar 2011 Location: South Carolina Posts: 3,433 View My Garage	catch can shouldnt affect mpg, i dont have one yet and i get better mileage city then he does highway. Chris in the DIC, what does it say your avg speed is? __________________ CAI Cold Air Intake, BMR Strut Tower Brace, BMR 1.2" Lowering Springs Gen5DIY Fog Lights, Big Worm Third Brake Light/Side Marker Tint (Charcoal) GTS Tail Light Covers, Purple Under Hood Lighting Magnaflow Resonated X-Pipe w/ Muffler Delete Black Plasti Dipped Wheels, Z/28 Spoiler

06-20-2014, 10:26 PM	#9
dmginc Drives: In Circles Join Date: Mar 2011 Location: South Carolina Posts: 3,433 View My Garage	next time you fill up reset your avg mpg and avg speed and see where it is at next fill up. also, what grade gas (87,89,91,93) are you running just out of curiosity? also check your tire pressure before you go anywhere. __________________ CAI Cold Air Intake, BMR Strut Tower Brace, BMR 1.2" Lowering Springs Gen5DIY Fog Lights, Big Worm Third Brake Light/Side Marker Tint (Charcoal) GTS Tail Light Covers, Purple Under Hood Lighting Magnaflow Resonated X-Pipe w/ Muffler Delete Black Plasti Dipped Wheels, Z/28 Spoiler

06-20-2014, 03:06 PM	#5
Da2ss Drives: Blueray metallic 2ss Join Date: Jun 2014 Location: Lampasas Texas Posts: 156 View My Garage	Octane is not and issue on the v6 cars.....so I've read over and over

06-20-2014, 06:01 PM	#7
TommyTheCat SHKE BKE Drives: 2013 Camaro Join Date: May 2014 Location: SoCal Posts: 3,108	That's terrible, I Get 33 MPG highway with a 6 speed manual LFX. Could be related to fuel pressure, map sensors, computer, and a ton of other stuff. Take it to the dealer... check fuel trims and fuel pressure for sure. What are you getting CITY?

06-20-2014, 10:21 PM	#8
Chris14RS Drives: RRM RS v6 Join Date: Mar 2014 Location: United States Posts: 204	I average around 30 mph in the city. I don't beat on my car. I range from 65-80 on the highways. It sticks at 19.8 mpg no matter what. It's crazy!

06-21-2014, 09:12 AM	#10
911medic Drives: 2012 SIM 2LT/1970 Camaro Join Date: Nov 2012 Location: Near Minneapolis, MN Posts: 1,578	OP, I can tell you that my average MPG can vary widely depending on my driving habits. And I don't mean just how I drive, I mean where I drive and when I drive. In the winter, my mileage takes a significant hit. Colder, denser air plus winter blended fuel plus extra idling time equals crappy MPG, like 18-19. In the summer, if I commute all the way to work, I average at least 24 MPG I mixed city/highway driving, 31 miles each way (about 70/30 hwy/city). If I only drive to the train station (about 5 miles away), my average drops to about 19-20 MPG. This route is about 50/50 hwy/city, and about 20‰ of that trip, the car is not warmed up. A couple of weeks ago, on a freeway trip, with a strong tailwind, I got over 30 MPG over several hundred miles at 75-78 MPH. Try this: next time you're on the highway, set your cruise control at say, 60 MPH. Be on a flat stretch of road. Then reset your MPG reading. See what your highway MPG is. If it's still that low, I'd say there's a problem, unless you're driving into a 40 MPH headwind. __________________ All bleeding stops eventually -- 2012 2LT Auto w/sunroof -- My journal thread Roto-Fab Intake & W/W Relocate Kit -- ADM Race Scoop -- Dynomax VT Axle-Back Exhaust -- Vitesse Throttle Controller RX Catch Can -- Drake Bowtie Delete -- JacFab Radio Face Cover -- LED Fog Lights -- LED Dome/Trunk/Plate Lights -- Gen5DIY Dash ABL -- Diode Dynamics Cupholder Lighting Wishlist: ACS T5 Splitter -- Hood Vent Mod -- Footwell/Door Pull/Homelink Button Lighting

06-21-2014, 09:40 AM	#11
GDSPEED Drives: 2014 2LT/RS Join Date: Dec 2013 Location: MD Posts: 94	I'm in the same boat as you. never seen more than 20 MPG average in my 14 2LT/RS...I always tell myself im going to drive normal and accelerate slowly to see if it improves my mpg by a lot but it never ends up lasting for the whole tank of gas

06-21-2014, 09:55 AM	#12
dmginc Drives: In Circles Join Date: Mar 2011 Location: South Carolina Posts: 3,433 View My Garage	what i find strange is that i dont try to get good gas mileage...from a stop im in race mode till i hit the speed limit...then ill cruise in an appropriate gear. that said im averaging 22.7 right now with my avg speed being 33. i reset the avg speed and avg mpg 5 tanks of gas ago. __________________ CAI Cold Air Intake, BMR Strut Tower Brace, BMR 1.2" Lowering Springs Gen5DIY Fog Lights, Big Worm Third Brake Light/Side Marker Tint (Charcoal) GTS Tail Light Covers, Purple Under Hood Lighting Magnaflow Resonated X-Pipe w/ Muffler Delete Black Plasti Dipped Wheels, Z/28 Spoiler

06-22-2014, 04:50 PM	#14
DylanH Drives: 2014 Ashen Gray Metallic RS Camaro Join Date: Apr 2014 Location: United States Posts: 16	I have a 14 1LT RS and I average around 23 mpg with 87 octane and 26 mpg with 91. Mostly driving highway, but mine is stock still.