Fuel consumption on sv6

[Potta9]

They have been trained in the US with CAT and Deutz in Europe. I know a guy that designs engine fuel management systems (But its the CAT guys that told me this)

Again I agree with you totally.. First and foremost my mechanic spins s#@t all the time.. but we all know that's what they are famous for. Secondly again I'm talking about the average car not someones mates hotted up Rav4.. I don't need to tell you what the average car is.. but the title of this thread would be a great place to start. You mention change gear and tyre size.. that is not "designed" I'm talking about how the car was designed (and i used that word in my post!). All cars spend 99% of their time in the top gear.. an engine can only have one point of most efficency at some rev range at this give top gear ratio.. itsofacto most driving is done around 80km/hr hence ..

I ask anyone on here.. what do you think the average family car is designed to run most fuel efficient at ? IT'S 80KM/HR !

FYI I have spent alot of time with cat and deutz. I currently work for Volvo who own a large percentage of deutz and deal with their engines and tech support guys often. Cat and deutz have almost nothing to do with cars nearly everything they do is heavy vehicles or plant . I'm sorry to say but these guys would have no Idea on optimum car speeds for fuel consumption. I find it hard to make a point with someone who has been told by this guy and that guy and are so naive but when told otherwise argue the point.
When I mentioned wheel and tire size I was referring to how a manufacturer sets up their vehicle ,not by modifying it. They also do come up with tire size and their gear ratios when designing the vehicle it's a major factor of the design !!!

I've also driven these stock size family cars over the last few years and have always noticed they get better fuel consumption on the highway than at 80
Holden , Toyota , ford , Mitsubishi , Nissan .
Now I'll leave you to it.

[flyjoe180]

Looks good indeed... 'cept it's an App for iPhone and I'm an Android. D'oh! Will have a look around to see if it's been ported to Android.

There is a very good Android fuel consumption and running costs app I use called 'Fuel Log'. There is a free version which does pretty much everything you might think, and the paid version keeps graph data for you for longer. Easy to use, great app which I use to help me budget for the car.

[aaronevolution]

They have been trained in the US with CAT and Deutz in Europe. I know a guy that designs engine fuel management systems (But its the CAT guys that told me this)

Again I agree with you totally.. First and foremost my mechanic spins s#@t all the time.. but we all know that's what they are famous for. Secondly again I'm talking about the average car not someones mates hotted up Rav4.. I don't need to tell you what the average car is.. but the title of this thread would be a great place to start. You mention change gear and tyre size.. that is not "designed" I'm talking about how the car was designed (and i used that word in my post!). All cars spend 99% of their time in the top gear.. an engine can only have one point of most efficency at some rev range at this give top gear ratio.. itsofacto most driving is done around 80km/hr hence ..

I ask anyone on here.. what do you think the average family car is designed to run most fuel efficient at ? IT'S 80KM/HR !

As I said in my other post, the average speed in Australia is 60kp/h, not 80kp/h.

[UFO]

I'm a bit late to this one.... I get mid to high 9's average for fuel consumption. 3L SIDI.
Mix of 70% suburban 30% hwy. Dont put in anything special, just ethanol. Once every 5 fills I'll put in Ultimate (especially if I know I'll be driving on a hwy for a few hours on a trip to Sydney).

I think tyre pressure is very important. A lot of people under inflate.... the default pump pressure of 32psi is too low for most cars.

[kyone]

almost nothing to do with cars nearly everything they do is heavy vehicles or plant .

I know but i would argue that they know a lot more about car engines then a mechanic does (they don't service them they commission them).. but lets just leave it at that.

I've also driven these stock size family cars over the last few years and have always noticed they get better fuel consumption on the highway than at 80
Holden , Toyota , ford , Mitsubishi , Nissan .
Now I'll leave you to it.

Totally agree But if you could drive the standard car that we talk about on a highway at 80km/hr rather then 100km/hr I would suggest they get better fuel economy at 80km/hr. Highway driving is always more economical because a large portion of fuel is burnt from acceleration not from velocity with suburban driving.

[kyone]

As I said in my other post, the average speed in Australia is 60kp/h, not 80kp/h.

I'm talking about maximum speed limits on Australian roads in kilometers of travel by the average person. Ie in a given day the average person would probably drive on average at 80km/hr +/- 20km/hr. That is only an opinion (based on common sense

I am curious why you know it to be 60km/hr ?