[dssence]

Originally Posted by strat61caster

Fuel economy is HIGHLY dependent on your drive cycle, the onboard computer is not accurate in my experience (always optimistic which makes your situation worse) and depending on when it was last reset can give a crazy reading (i.e. reset, run it up to redline through all the gears on the way home reading will be worse than what you're seeing, or immediately jump on the free way and cruise control at 50mph and get twice the economy you're seeing). Cars are also usually less fuel efficient before break in is complete, add in that you're not supposed to keep it at a steady rpm and the economy WILL be shit the first 1,000 miles.

12L/100km is roughly 19.6 mpg, which I would consider normal for stop and go city/rush hour traffic driving. The US has the car rated for 22 mpg city, 30 mpg highway (7.8L/100km).

I personally don't see the point in the plug in for modifying the throttle signal and it seems super sketchy. Sure it can be done safely but I'd rather leave it up to the OEM and modify my driving style.

Edit: For instance here's my fuelly, you can SEE where I have tanks that are mostly freeway and the tanks where I commute to work, I stopped tracking it but my commute changed and I'm getting closer to 24 mpg on those tanks and with cruise control and patience I can get 33 mpg on the freeway trips.
http://www.fuelly.com/driver/stratcaster/frs

Edit 2:
http://www.fuelly.com/car/scion/fr-s
http://www.fuelly.com/car/subaru/brz

Edit 3: Isn't this like the fifth time you've asked about your fuel economy?

heh correct , like about the fifth time. Today I went to my dealership to place the damn rubber grummets underneath the rear end. They didn't place them on the pree inspction. I also told them about the rear suspension struts tops which didn't have the rubber plug as well. They added some plugs with some silicone cause couldn't find ones which fitted. If that don't leave them sealed up I'll be buying them from toyota genuine parts online.

Now going back to the fuel economy thing, I told the guys what happened that when I took the car hof te dealer with the full tank they filled up , I ended up with the last quarter tank and have done 140km with the ecu showing an average of 18Litres per 100km Totally NOT aceptable
Last week I filled up the tank ( 2nd fill) V-power shell, with only the last 1/4 tank I filled up 32 litres (guessing the fuel needle it's not accurate cause every 1/4 tank should be 12.5 litres) .
Anyways i'm shifting gears shortly (sometimes I guide myself with G-on blinking arrow up) and damn I'm keeping rpms stable below 3k I thought it would be better to keep rpms constant to achieve better fuel economy. But you're saying :

Cars are also usually less fuel efficient before break in is complete, add in that you're not supposed to keep it at a steady rpm and the economy WILL be shit the first 1,000 miles.

AFAIK new cars are factory tuned not to have a break in period like old cars where mechnical parts had to be in motion to achieve a better consistency and settle up. Hows the deal here, I do really more insight on this cause this car has D4-S port and direct injectors 2 which work at different revolutions, would be wise to know as to know when they kick up or not.