I'm getting 34mg, plz help!

Hey, I've been having the same issue. Usually get anywhere from 30-38 mpg, on average around 35mpg, I thought that it was due to something wrong with my car but I resetted the trip meter and hopped on the freeway, got up to 65-70 mph and turned on cruise control for about 10 minutes. That's when my mpg started hitting 50mpg. Which means that it's my driving style and not the car itself. I'm doing other things to try to increase MPG such as changing out the cabin/engine air filter and replacing the tires with the Goodyear Assurance Fuel Max which I'll set to 42psi front/40psi rear. I'm pretty sure it mainly comes down to driving style, you can search up gliding/coasting.

 

welcome!
we need some background please. how many miles on her?
how long (time/miles) have you owned her? what tire make, model and pressure?
how are you measuring mpg's?
how many miles a day do you drive, and what length trips?
when did you last clean/replace the air and cabin filters?
this will get the ball rolling, and we can have you check some other things.

 

Aluhex, thanks for posting this. This is exactly the same advice I always give when someone is concerned about lower mpg. On an uncrowded highway using cruise control, one should hit 50+ mpg if driving alone. The cruise control is the important part as it takes the potential lead foot out of the equation.

 

Check to see if the rear brakes are dragging badly.

 

I guess I'm strange LOL. I always get better mpg's on the highway when I DON'T use the cruise control. Especially when traffic is a little on the heavy side and you have to go like hell to keep up with everybody, that's when I get my best mpg's. I think it's because your always going up and down in speed, it's like forced pulse and glide.

 

No problem at all, I saw his post sitting here for a couple days and I recently figured out the solution myself. I'm sure questions like these come along every few days so hopefully they find their way here. For anyone reading, I'd suggest using cruise control on open roads at night while there's no traffic so you can maintain speed comfortably.

 

hello?

 

Hit and run ?

 

A 12, let me be blunt, the traction is 6 years old, get a new one, 1600$, 500$ labor, back to 50+mpg, and another five years.

 

what is A 12? why would you replace a 6 year old traction battery without a code, isn't it under warranty?

 

If you can beat cruise control, it's because you have a disciplined right foot. However, there are posters asking for advice on why their fuel economy is bad and the right foot can't automatically be ruled out as a culprit. Fortunately, it's a simple and cheap test.

I know lead foots that skip cruise control, stick in the passing lane, drive way above the speed limit, tailgate the car in front of them, swerve from lane to lane as if they're playing Frogger, move their foot from the gas to the brake to the gas to the brake, etc... and wonder why they are way below EPA estimates.

 

That's my guess, and luckily, you are still covered under warranty because you're in a CARB state. Just verify that the car is not from out of state nor has a salvage title.

But something is wrong with the car, your driving style, or the driving conditions as the mpg is way too low. If you want to save yourself $150, first try Aluhex's advice on a round trip highway run on a warm engine at 70 mph or less. Set tripometer to measure mpg.

Also, what were your ballpark mpg when you were between 77k and 85k miles? Did you have good fuel economy then?

 

never heard of anything under the back seat being affected by people getting in and out. take it to a suspension shop and have them look everything over. you could easily need new struts, bushings, etc.
the bumpy ride and mpg's are not related.

if your dividing miles driven by gallons of gas, that's fine.

 

have a mechanic lift her up and make sure none of the brakes are dragging.

 

How far/long did you use cruise control and more importantly, did you use it for a round trip? RT is important because even a slight change in elevation can make a big difference in fuel economy. And what speed did you set your cruise at?

Assuming that you drove by yourself and you made a 50 mile round trip highway trip, you should have gotten more than 46 mpg. That's why I'm asking these questions.

 

You're getting 46mpg which isn't bad, I would say the target is 50-53mpg. So the deviation could be due to your tires (Low Rolling Resistance? I didn't look up if your tires are LRR). If you haven't changed out the cabin/engine air filter in the last year then you may consider changing it out. I think I read somewhere that it helps a bit, but I'm not sure myself. Either way its cheap to replace and easy to DIY.

When you say the car is sluggish, are you in ECO/PWR or normal mode? The idea to increase mpg is to not use gas. Get up to speed using electricity and gas and maintain the speed by using little to no gas (keep it under the halfway mark on the hybrid indicator screen, 'ECO' should light up). The slightest press of the gas pedal will push it past the halfway mark. Especially if you are in Power mode. Using Eco (less than halfway) will also make you feel sluggish or a slight lag before acceleration kicks in.

 

46 mpg is pretty good.. I drive like a maniac when accelerating from a full stop because I hate tailgaters. Then when I reach on a speed I want, I release the gas for 1 second then tap on it lightly. Pulse and Glide really works well... I get about 44 to 45 mpg by the way I drive now on ECO mode and I'm satisfied with it..

Try to brake slowly before a full stop, It will increase your mpg while your hybrid battery regenerates. Braking hard will never get to increase mpg by .1 or .2 on your dashboard..

The first 60-80 miles on your meter on a full tank is crucial. If you drive carefully with using mostly the electric side and driving on a flat road, you can get about 49-53 mpg easily.