Long term fuel economy
#2
Registered User
Join Date: May 2003
Location: Sydney
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
Interesting... my view is that fuel economy all depends on how hard you push it.
Cruising at 110km/h in cruise on the freeway I get better than 10l/100K.
Driving more aggresively (around town with the occasional beep at 9200rpm) I usually get around 13+
Cruising at 110km/h in cruise on the freeway I get better than 10l/100K.
Driving more aggresively (around town with the occasional beep at 9200rpm) I usually get around 13+
#4
rock-->o<--hard place
Thread Starter
Join Date: Sep 2003
Location: Canberra, AUSTRALIA
Posts: 3,242
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by msydd
Interesting... my view is that fuel economy all depends on how hard you push it.
Cruising at 110km/h in cruise on the freeway I get better than 10l/100K.
Driving more aggresively (around town with the occasional beep at 9200rpm) I usually get around 13+
Interesting... my view is that fuel economy all depends on how hard you push it.
Cruising at 110km/h in cruise on the freeway I get better than 10l/100K.
Driving more aggresively (around town with the occasional beep at 9200rpm) I usually get around 13+
![Wink](https://www.rx8club.com/images/smilies/wink.gif)
#5
New Member
How come you get this figure mate... I am averaging around 13L even I drive 70% Highway. If 90% Highway I get 12L... why 10L?
I am cruising at 100kmh ... is that not good in 6th gear?
CBD driving - I will get 20L/100km :p
I am cruising at 100kmh ... is that not good in 6th gear?
CBD driving - I will get 20L/100km :p
#6
rock-->o<--hard place
Thread Starter
Join Date: Sep 2003
Location: Canberra, AUSTRALIA
Posts: 3,242
Likes: 0
Received 0 Likes
on
0 Posts
It's all to do with the right foot. If you insist on exercising it, especially through the gears (and let's face it, this car does sound good at 8,000+rpm :p ) you pay the consequences … at the fuel pump … and occasional speeding fine
![EEK!](https://www.rx8club.com/images/smilies/eek.gif)
#7
Registered User
Join Date: May 2003
Location: Sydney
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
Takahasi... I'm trying to work out why the 10L figure...I got better than 10 on both the trip down and back from the Audax Alpine ride.
I was expecting around 12...I used cruise control almost all the way, which I think is more economical.
Also, this was 100% freeway, which may make a big difference to the average??
Do you use cruise much?
I was expecting around 12...I used cruise control almost all the way, which I think is more economical.
Also, this was 100% freeway, which may make a big difference to the average??
Do you use cruise much?
#8
Registered User
Join Date: Aug 2003
Location: between Sydney and Brisbane
Posts: 221
Likes: 0
Received 0 Likes
on
0 Posts
I got 9.8/100 mainly freeway to Melbourne at Xmas fully laden.
And I recall Timbo does the Sydney-Canberra freeway weekly.
And I read in American threads wildly varying consumption figures.
Every rx8 must be an individual!
And I recall Timbo does the Sydney-Canberra freeway weekly.
And I read in American threads wildly varying consumption figures.
Every rx8 must be an individual!
#9
rock-->o<--hard place
Thread Starter
Join Date: Sep 2003
Location: Canberra, AUSTRALIA
Posts: 3,242
Likes: 0
Received 0 Likes
on
0 Posts
mine has a lot of freeway - say 75 percent - I use c/c set at 120kph, and I reckon f/c never dips below 11L/100K. To do so requires cruising at less than 110kph: ideally below 3250rpm. But I'd like to experiment with resetting the ecu.
#10
Registered
Join Date: Aug 2003
Location: Brisbane, Australia
Posts: 1,459
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by jax8
I got 9.8/100 mainly freeway to Melbourne at Xmas fully laden.
And I recall Timbo does the Sydney-Canberra freeway weekly.
And I read in American threads wildly varying consumption figures.
Every rx8 must be an individual!
I got 9.8/100 mainly freeway to Melbourne at Xmas fully laden.
And I recall Timbo does the Sydney-Canberra freeway weekly.
And I read in American threads wildly varying consumption figures.
Every rx8 must be an individual!
#11
Shifty Bastard.
Join Date: Feb 2004
Location: Melbourne, Australia.
Posts: 4,835
Likes: 0
Received 0 Likes
on
0 Posts
With fuel prices the way they are at the moment, I thought it'd be prudent to haul Timbo's thread up from the depths.
I've just achieved my best fuel economy yet. I filled up this week at 114.9cents/litre and got economy of 10.9l/100km's. That equates to 559km's out of a tank based on the stated capacity of 61 litres. Hymee has squeezed over 62 litres in, but he rolled up to the pump out of fuel
. Me, I have yet to drive over 500km on a tank, but having gotten so close on this tank, I'm building up the courage to give it a burl.
Righto, these are the factors that I think could have contributed to these figures:
1. The tank was a 40/60 mix of city and country driving.
2: I have recently switched to BP Ultimate, from Shell Optimax.
3: I am pretty easy on the brakes, so I don't spend a lot off time accelerating back up to speed.
4: I had the re-flash to "G" at the 10000Km service. (I've now done 13500km)
5: I've had my 8 since February, I'm becoming better acquainted with the car, it shows in my driving....the gear changes are smoother!
6: The car is now run in.
7: I run my tyres at 36psi.
8: Just me in the car for the duration.
9: I never exceeded 7500rpm. Mainly 4000/4500 gearchanges.
I didn't consciously try to set a record for this tank, so I was a little surprised
.
How are you guys going?
Regards, Gomez.
I've just achieved my best fuel economy yet. I filled up this week at 114.9cents/litre and got economy of 10.9l/100km's. That equates to 559km's out of a tank based on the stated capacity of 61 litres. Hymee has squeezed over 62 litres in, but he rolled up to the pump out of fuel
![EEK!](https://www.rx8club.com/images/smilies/eek.gif)
Righto, these are the factors that I think could have contributed to these figures:
1. The tank was a 40/60 mix of city and country driving.
2: I have recently switched to BP Ultimate, from Shell Optimax.
3: I am pretty easy on the brakes, so I don't spend a lot off time accelerating back up to speed.
4: I had the re-flash to "G" at the 10000Km service. (I've now done 13500km)
5: I've had my 8 since February, I'm becoming better acquainted with the car, it shows in my driving....the gear changes are smoother!
6: The car is now run in.
7: I run my tyres at 36psi.
8: Just me in the car for the duration.
9: I never exceeded 7500rpm. Mainly 4000/4500 gearchanges.
I didn't consciously try to set a record for this tank, so I was a little surprised
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
How are you guys going?
Regards, Gomez.
Last edited by Gomez; 10-27-2004 at 11:12 PM. Reason: wrong gearchange rpm...oops.
#12
rock-->o<--hard place
Thread Starter
Join Date: Sep 2003
Location: Canberra, AUSTRALIA
Posts: 3,242
Likes: 0
Received 0 Likes
on
0 Posts
Must do an update, but that sounds on the money to me, for mixed driving. It is possible to do better but it's a very boring drive
![Wink](https://www.rx8club.com/images/smilies/wink.gif)
#13
Registered User
Join Date: May 2004
Location: Melbourne, Australia
Posts: 147
Likes: 0
Received 0 Likes
on
0 Posts
I've been keeping track since I got my RX8 at the end of May. The huge increase in L/100km was the Mazda drive day recently. My driving habits are/were:
For the first 4 weeks pretty much I drove 5 - 7 days a week 100km round trip each day, 90% freeway 80-110km/h cruising. That takes into account the first 8 figures. After that I spent a minimum of 1 day a week doing the same 100Km round trip, the other 4 work days were 12km drive to the station and 12km back in the evening. The 2 10.xx L/100km were after a 300km 110km/hr cruising to Hamilton and back. So 600km round trip.
All entries are fill the tank up, no $10 splash here and there. Petrol used has been a variety of Shell Optimax (8 fill ups), Caltex Vortex Gold (10), BP Ultimate (5) and Mobil Synergy 8000 (2). I'll add a basic graph image in a followup.
Litres L/100km Est Max Distance
53.13.......11.91.......512.06
53.35.......12.03.......507.09
53.54.......11.70.......521.59
23.98.......12.01.......507.99
52.81.......11.22.......543.70
51.76.......11.02.......553.55
54.56.......11.81.......516.53
53.55.......11.75.......518.98
55.76.......12.28.......496.77
51.13.......11.84.......515.39
56.74.......11.89.......512.85
58.51.......11.76.......518.88
56.75.......10.77.......566.27
57.87.......12.17.......501.44
51.07.......11.53.......529.26
55.28.......12.11.......503.85
51.35.......11.88.......513.66
56.28.......12.52.......487.31
51.86.......12.16.......501.67
55.88.......12.78.......477.29
18.26.......10.52.......579.60
53.47.......18.93.......322.19
58.79.......12.40.......491.92
34.60.......11.22.......543.53
60.16.......11.85.......514.89
For the first 4 weeks pretty much I drove 5 - 7 days a week 100km round trip each day, 90% freeway 80-110km/h cruising. That takes into account the first 8 figures. After that I spent a minimum of 1 day a week doing the same 100Km round trip, the other 4 work days were 12km drive to the station and 12km back in the evening. The 2 10.xx L/100km were after a 300km 110km/hr cruising to Hamilton and back. So 600km round trip.
All entries are fill the tank up, no $10 splash here and there. Petrol used has been a variety of Shell Optimax (8 fill ups), Caltex Vortex Gold (10), BP Ultimate (5) and Mobil Synergy 8000 (2). I'll add a basic graph image in a followup.
Litres L/100km Est Max Distance
53.13.......11.91.......512.06
53.35.......12.03.......507.09
53.54.......11.70.......521.59
23.98.......12.01.......507.99
52.81.......11.22.......543.70
51.76.......11.02.......553.55
54.56.......11.81.......516.53
53.55.......11.75.......518.98
55.76.......12.28.......496.77
51.13.......11.84.......515.39
56.74.......11.89.......512.85
58.51.......11.76.......518.88
56.75.......10.77.......566.27
57.87.......12.17.......501.44
51.07.......11.53.......529.26
55.28.......12.11.......503.85
51.35.......11.88.......513.66
56.28.......12.52.......487.31
51.86.......12.16.......501.67
55.88.......12.78.......477.29
18.26.......10.52.......579.60
53.47.......18.93.......322.19
58.79.......12.40.......491.92
34.60.......11.22.......543.53
60.16.......11.85.......514.89
Last edited by dracoMJB; 10-27-2004 at 02:45 AM.
#14
Registered User
Join Date: May 2004
Location: Melbourne, Australia
Posts: 147
Likes: 0
Received 0 Likes
on
0 Posts
Looks like the figures didn't come out as spaced as I would have liked. I'll have a play with editing the previous post.
The graph I'm adding here contains the L/100km obtained at each fill up, plus a running average (add all L/100km together and divide by total number of fill-ups at each fill up) and an overall L/100km obtained (total km and litres work out L/100km at each fill up).
The current average is 12.08L/100km and the current overall L/100km is 12.01L/100km.
The graph I'm adding here contains the L/100km obtained at each fill up, plus a running average (add all L/100km together and divide by total number of fill-ups at each fill up) and an overall L/100km obtained (total km and litres work out L/100km at each fill up).
The current average is 12.08L/100km and the current overall L/100km is 12.01L/100km.
#15
Registered
Join Date: Aug 2003
Location: Brisbane, Australia
Posts: 1,459
Likes: 0
Received 0 Likes
on
0 Posts
I get crap economy around town doing lots of short trips (around 10km) - I get 14-15L/100 and I keep the car under 4000 RPM because it's just getting warm at the end of a 10k trip.
On a recent long run from Brisbane to Yeppoon I got 10L/100 using cruise control in 6th, keeping it under 3500 RPM, but plenty of overtaking (where I am far from conservative with gear selection and acceleration). Tyres were at 38 PSI and air con was on the whole time. So I'm not unhappy with the fuel economy on long trips.
On a recent long run from Brisbane to Yeppoon I got 10L/100 using cruise control in 6th, keeping it under 3500 RPM, but plenty of overtaking (where I am far from conservative with gear selection and acceleration). Tyres were at 38 PSI and air con was on the whole time. So I'm not unhappy with the fuel economy on long trips.
Last edited by sco; 10-27-2004 at 02:57 AM.
#16
indicator-sensei
Join Date: Jun 2003
Location: London, Pomland
Posts: 401
Likes: 0
Received 0 Likes
on
0 Posts
Hmmm, so far, my best economy is 9.3L/100km over a 300km stretch, ALL highway... cruising at or below 117km/h (which keeps it under 3750rpm, ie, first set of ports open only)... normally, around town, no matter how conservative I try to be (I try, doesn't mean I succeed
) is about 14.5-15L/100km.
![Wink](https://www.rx8club.com/images/smilies/wink.gif)
#17
Registered User
Join Date: Oct 2004
Location: Sydney, Australia
Posts: 58
Likes: 0
Received 0 Likes
on
0 Posts
I don't seem to be doing as well as you guys on my petrol consumption. Haven't done 2,000km yet, but only seem to get about 15.5l/100km, pretty much city driving. Mostly cruise around 3k and only go up to 4 -4.5 k before changing gear. Any tips?
#18
Shifty Bastard.
Join Date: Feb 2004
Location: Melbourne, Australia.
Posts: 4,835
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by spaldo
I don't seem to be doing as well as you guys on my petrol consumption. Haven't done 2,000km yet, but only seem to get about 15.5l/100km, pretty much city driving. Mostly cruise around 3k and only go up to 4 -4.5 k before changing gear. Any tips?
#19
Registered User
Join Date: Aug 2003
Location: between Sydney and Brisbane
Posts: 221
Likes: 0
Received 0 Likes
on
0 Posts
I think I may have beaten pepe...
9.1 l/100km South West Rocks to Sydney recent long week-end (i.e. double points) and p-plate daughters driving most of the way.
We are approaching 50,000 km which I feel sure is improving fuel economy. (Thinks; must look up another Timbo thread, replacement tyres.)
9.1 l/100km South West Rocks to Sydney recent long week-end (i.e. double points) and p-plate daughters driving most of the way.
We are approaching 50,000 km which I feel sure is improving fuel economy. (Thinks; must look up another Timbo thread, replacement tyres.)
Thread
Thread Starter
Forum
Replies
Last Post
JimmyBlack
Series I Major Horsepower Upgrades
273
02-10-2020 10:23 PM
Touge
Canada Forum
0
09-01-2015 10:47 PM