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View Full Version : NEW 3WKS OLD FD2 fuel consumption issue



amuson
02-09-2007, 12:49 AM
hey guys
this might be a repost...but
jst picked up my fd2 3wks ago and it has consistently only done about 430-450km b4 fuel light comes on. my friend said his car does at least 500km per tank....
has anyone had the same problem and what did u do about it?

thanks

Shimian
02-09-2007, 12:58 AM
500km is remarkable in my books. I reckon to achieve that, you probably need to

accelerate very slowly every time you go from idle


make use of hills to move car instead of accelerator

99% highway driving on cruise control


Im heavy footed 50% of the time and i get about 400-420km per tank. So what youre getting i think is quite good

amuson
02-09-2007, 12:59 AM
ok thanks man

JaCe
02-09-2007, 01:32 AM
I'm heavy footed around 25% of the time (with ocassional bursts of free-revving madness!) and I reach about 480km (before light comes on) in the 1.8L.

IAMVTEC
02-09-2007, 05:37 AM
500ks from a tank would be almost impossible for the automatic unless if you were purely restricted to highway driving.

Best ive gotten is like 450 max.

since yours is fd2 I think you should be happy youre getting even 430.

amurray
02-09-2007, 08:49 AM
geeze u guys must drive crazy...i can get over 600 Ks to a tank... No probs thats giving it a bit to

Shimian
02-09-2007, 09:13 AM
geeze u guys must drive crazy...i can get over 600 Ks to a tank... No probs thats giving it a bit to


You serious? Ive tried driving the way i described one time and i got 480km. Then my car must be faulty if i cant get over 500km

gerard
02-09-2007, 12:12 PM
typically get only 440 b4 low fuel light on my fd2 auto. about 9.5l/100km

egads
02-09-2007, 12:56 PM
how many clicks on your odometer? i always thought you would get better consumption once the engine was properly run in.

Dy_
02-09-2007, 06:24 PM
wth! 600km thats heaps.

JaCe
02-09-2007, 08:22 PM
My (approx/estimated) 500km/tank is considering I drive city-driving in traffic 90% of the time.

Shimian
02-09-2007, 08:40 PM
you guys will have to show me the tricks. No way i can reach 500km. As soon as the LED comes on, im on about 470-480km. That was driving grandma style. No hard accelerating and 50/50 city/freeway

didz
03-09-2007, 12:29 AM
a lot of things can be taken into account, weather for example because ur car uses a lot of petrol when starting up while cold. If its warmer then it wont take as long to warm up.

Other things like which fuel u actually use. You will in most cases get better milage out of 95 ron than standard 92 ron unleaded.

For me, fuel makes a big difference. i usually get 400-450 kays out of my DC5R (yes different car but its still 50lt) but if i use certain petrol (caltex 98) i can get it to 500-550 without too much troubles (and that includes vtec and some heavy throttle)

a guy at work owns an 07 civic vti and he gets betwen 500-600 kays from his car and i tell u now, he DOES drive like a grandma but he also takes a lot of care and the car is always garaged (weather, engine doesnt get quite as cold).

Check your tyre pressure if you're worried so much and maybe get a wheel alignment as well and dont forget, an intake mod will most of the time increase your fuel consumption unless its tuned to use it efficiently!

amuson
03-09-2007, 12:31 AM
well my fd2 is a manual and ive done about 1600 kays now but is only doing 440per tank... jst seems kind of low... ive been driving like a grandma for about 3wks now, trying not to exceed 3000rpm while runnng it in...would of at least expected 480km with ct driving at least... jst doesnt seem normal

amuson
03-09-2007, 12:36 AM
come to think of it... my friends car is a 06 fd2 which has a higher profile tire than the 07s maybe that has something to do with the difference in fuel consumption. i've been using bp 98 for each tank... i take it that for 215/45/17 that u still hav tires pumped to about 32psi?

didz
03-09-2007, 12:37 AM
trying not to exceed 3k rpm is ok but u gotta be careful. low rpm is good when ur on a flat or down a hill but it can make u use more power if going up hills. and with tyres i dunno, i have mine at 35psi. Also just remember that an engine doesnt work the best it can when its still being run-in. Usually from my experience, it takes until about the 10,000 mark to make the car perform at its best.

Shimian
03-09-2007, 06:53 AM
yes. taken all those factors into consideration - 98 octane, under 3000 rpm, use hills etc. I still find 600km per tank is unbelievable. Hitting 500km for me is impossible. Maybe my car is still new, not 10,000km yet. But then again, another 150km per tank is still impossible. I average to get about 25km per block (on the petrol gauge), which is about 10L/100km.

andyhui01
03-09-2007, 12:59 PM
Jace... are you on a Manual?
Shimian, I'm on a Auto VTI-L and I do less than you, about 420-450km before the light comes on... but I do more city than highway.

Shimian
03-09-2007, 05:18 PM
Jace... are you on a Manual?
Shimian, I'm on a Auto VTI-L and I do less than you, about 420-450km before the light comes on... but I do more city than highway.

Thats my average 420-450km - 50/50 city/highway - 50/50 grandma/VTEC :p

amurray
03-09-2007, 06:37 PM
serously guys thats REALLY bad... 600 K is really easy in mine...

buddah51au
06-09-2007, 12:58 PM
500ks from a tank would be almost impossible for the automatic unless if you were purely restricted to highway driving.

Best ive gotten is like 450 max.

since yours is fd2 I think you should be happy youre getting even 430.

Sorry to inform you but i have had a 2006 VTI auto for 13 1/2 months now and travelled almost 26,000km. I have never had the low fuel warning lilight come on under 590km, 600 to 610 is normal. Very little highway driving....mostly secondary rural roads with some light town driving.

buddah51au
06-09-2007, 01:02 PM
For those of you who might be interested........

I am off to Sydney shortly, so i will be able to inform everyone how far the current model civic 1.8 ltr Auto can go on 1 tank of fuel as well as the best, worst and everage fuel consumption. As the round trip will be between 3,500 and 4,000 km i will be able to gauge very accurate figures and to be honest i will be disappointed it the average is over 6L/100km

buddah51au
06-09-2007, 03:53 PM
I personally think the fuel consumption issue is caused by the way the consumption figures are advertised. While it is possible to achieve the advertised figures it is impossible when driving in the city. If you look at the Honda United Kingdom site you will see they advertise seperate figures for city and highway. Here are there advertised figures for the 1.8 ltr engine.......
Manual......City = 8.2L / 100km.......highway = 5.4L / 100km........................
Auto.........City = 9.0L / 100km.......highway = 5.4L / 100km........................
Type R......City = 12.7L / 100km......highway = 7.0L /100km.........................
From reading this site the city figures seem much closer to what most people are achieving, as for highway figures i will know soon

MKI4EVA
08-09-2007, 02:31 AM
whats the point of ivtec if your driving to milk out 500km+/tank?

And if your getting 600km/tank..........fark me you just run alot of red lights

jk!!.

We've never gotten the car over 470km.......down to the last breath of 98 octane.

Borg
08-09-2007, 09:47 AM
I have just filled my Civic (VTi-L/Auto) for the first time since I picked it up.

I had done 405kms on 38 litres of fuel (unknown RON, probably 91 as it was filled by dealer). That would equate to around 530 kms per 50 litres. Not a bad figure considering it is still being "run in". I do mainly city driving, with some freeway travel as well. :thumbsup:

buddah51au
09-09-2007, 06:35 PM
whats the point of ivtec if your driving to milk out 500km+/tank?

And if your getting 600km/tank..........fark me you just run alot of red lights

jk!!.

We've never gotten the car over 470km.......down to the last breath of 98 octane.

In the Case of the VTEC design on the R18 A engine fitted to the current model Civic. the VTEC system is doing exactly what it was designed to do and that is give great ecconomy.

And as for 600km per tank goes......that has easily been surpassed yesterday......Try low fuel light coming on at 660km & 44.4 liters for 708km...
i will inform everyone of my findings and thoughts regarding ecconomy with this car when i get back home. Somw quite interesting findings......

Shimian
09-09-2007, 09:51 PM
wow, everyone getting so high fuel consumption. I must have gotten myself a lemon :(

MKI4EVA
10-09-2007, 09:11 AM
wow, everyone getting so high fuel consumption. I must have gotten myself a lemon :(


We've had two civic sports now and they both did the same sort of fuel mileage. Must be a Vti or auto box thing.

Shimian
10-09-2007, 09:36 AM
We've had two civic sports now and they both did the same sort of fuel mileage. Must be a Vti or auto box thing.

well its a VTI thing not auto box thing cos i drive an auto. Maybe VTI get higher mileage than Sport models? I just filled up my tank from red light and driving like a grandma. Ive hit half way on the tank and i have about 240km. Looks like ill be getting about 480km again. Beats me how anyone can get 600km. With this run, im not going over 3k rpm and letting car roll down hills. Maybe next run i will try using 91 ron

markCivicVti
10-09-2007, 09:50 AM
Of course the vti will be more economic... considering it's a 1.8 ltr not a 2ltr like the sports. But the difference shouldn't be huge.

But yeah your (shimian) consumption is close to 10ltr/100 which is just far too high for the civic fd2... are you doing mainly city driving? That would have a pretty big impact.

Shimian
10-09-2007, 10:02 AM
Of course the vti will be more economic... considering it's a 1.8 ltr not a 2ltr like the sports. But the difference shouldn't be huge.

But yeah your (shimian) consumption is close to 10ltr/100 which is just far too high for the civic fd2... are you doing mainly city driving? That would have a pretty big impact.

480km is not far too high. This is grandma styles. My usual consumption as mentioned before is about 420-450km - 50/50 city/highway - 50/50 grandma/VTEC.

buddah51au
12-09-2007, 05:01 PM
480km is not far too high. This is grandma styles. My usual consumption as mentioned before is about 420-450km - 50/50 city/highway - 50/50 grandma/VTEC.

Grandma style.....I always run 6 to 8 kph above whatever speed limit is posted........i dont want any surprises from hidden cameras, so if that is grandma driving i will xxxxxxxxxx

Shimian
12-09-2007, 05:09 PM
when i say grandma styles, i dont mean i travel ultra slow. it means i dont rev hard. My take off is very gradual and not going above 3000rpm, trying to stay around 2000rpm. Pretty much 0% heavy footed, 0% not hitting vtec

buddah51au
15-09-2007, 08:44 AM
I have just completed a return trip to sydney, a total distance of 3,084km in 7 days. Overall the fuel consumption was very impressive and my findings tell me the VTEC system works exactly as it is described (to my understanding of it). The bottom line is fuel consumption is very much controlled by the speed driven at. My understanding of the IVTEC system on the R18A engine is that it is most efficient in the 90 to 110 KPH range & i found this to be completely accurate. My findings were this.....eg; with the majority of cruising @ 108KPH on cruise control i returned a figure of 6.28L/100km, however if you increase that to 118 KPH, again on cruise control for extended periods the average fuel consumption increases to 6.55L/100KM. But the real eye opener for me was having the wife drive for a period of time (on P plates), therefore the Cruise control set @ 101KPH, followed by 400kms of night driving on Kangaroo infested roads where i had the cruise control set @ 90kph (I did not want to put a roo through the radiator so if u want to call it grandpa driving i will accept that) I got my best consumption figures for the trip......577km / 33.45L
and that equates to 5.8L/100km. One other thing i would like to mention is that from Maitland to Campbelltown, 2 days of city driving and back to Maitland i averaged 7.19L/100km, exactly as advertised for the VTI. Overall figures for the trip....3,084km / 199.79L = 6.48L/100km...............................
Please note that these figures could never be expected in the Civic sport with the 2.0 liter engine.

buddah51au
15-09-2007, 09:21 AM
480km is not far too high. This is grandma styles. My usual consumption as mentioned before is about 420-450km - 50/50 city/highway - 50/50 grandma/VTEC.

I think people shopuld uderstand the design principles of the IVTEC system on the R18A engine

Borg
18-09-2007, 05:50 PM
I have just filled my Civic (VTi-L/Auto) for the first time since I picked it up.

I had done 405kms on 38 litres of fuel (unknown RON, probably 91 as it was filled by dealer). That would equate to around 530 kms per 50 litres. Not a bad figure considering it is still being "run in". I do mainly city driving, with some freeway travel as well. :thumbsup:

Just filled up for the 2nd time. Using Mobil 2000 (91 RON) I did 452.6 kms on 35.49 litres = 7.84 L/100km. (~640kms per full tank). I am happy so far. It will be interesting to see what economy figures I get once the engine is working at its peak, and using different fuel (BP, Shell, 95 RON, 98 RON).

markCivicVti
18-09-2007, 06:12 PM
I must admin after reading a some of semi-technical articles on 'The Temple Of VTEC' on the R18a and it's implementation of VTEC (i-VTEC) was a bit dissapointment. I suppose I was hoping for a bit of a VTEC kick at 5.5k rpm. But after looking at some of the power and torque output charts of the 1.8 I'm actually impressed with the performance they extracted from it.

They managed to extract alot of torque for a 1.8 ltr... and the 'Normal' cams are fairly aggressive.. It seems the R18a has lot to offer. But understanding the conditions which are required for the 'i-vtec' cams to 'kick' in will help with fuel consumption.

On the downside it seems the redline has suffered for this and appears to be around 6.5k (effectively in an autobox).

Still waiting for my new civic to be built... i want it NOW thanks thailand!

BOOYAH!! I just noticed that my rep was > 0 .. w00t!! love ozhonda

buddah51au
19-09-2007, 01:51 PM
Just filled up for the 2nd time. Using Mobil 2000 (91 RON) I did 452.6 kms on 35.49 litres = 7.84 L/100km. (~640kms per full tank). I am happy so far. It will be interesting to see what economy figures I get once the engine is working at its peak, and using different fuel (BP, Shell, 95 RON, 98 RON).

Why would you spend the extra money for 95 or 98 RON on a car that is designed to run on standard 91 RON. It will make very little, if any difference to fuel consumption. All you achieve is increasing the running cost of the vehicle and running costs is 1 of the reasons we buy a Civic.

buddah51au
19-09-2007, 01:54 PM
I must admin after reading a some of semi-technical articles on 'The Temple Of VTEC' on the R18a and it's implementation of VTEC (i-VTEC) was a bit dissapointment. I suppose I was hoping for a bit of a VTEC kick at 5.5k rpm. But after looking at some of the power and torque output charts of the 1.8 I'm actually impressed with the performance they extracted from it.

They managed to extract alot of torque for a 1.8 ltr... and the 'Normal' cams are fairly aggressive.. It seems the R18a has lot to offer. But understanding the conditions which are required for the 'i-vtec' cams to 'kick' in will help with fuel consumption.

On the downside it seems the redline has suffered for this and appears to be around 6.5k (effectively in an autobox).

Still waiting for my new civic to be built... i want it NOW thanks thailand!

BOOYAH!! I just noticed that my rep was > 0 .. w00t!! love ozhonda

A good article to read mark as it helps you understand the principles of this particular engine design, and upon understanding it help you to achieve excellent ecconomy

gumbii
09-10-2007, 12:20 PM
i have a 06 civic vti auto and at the start i used to get pretty dodgey mileage aswell..something around the 480 per tank...

at the time i thought it was a lemon too but ive done over 20000km now and can get about 550 per tank..

best ive done is about 590km but that was mainley freeway cruising

is running an engine in a myth? as when i first got my car i did my first 1000 in a week..LOL mainly just crusing but at times i would hit 5krpm+.

markCivicVti
09-10-2007, 12:37 PM
I've read so many things on running in an engine... it confuses me.

The conservative ppl say drive it smoothly through all the gears but not revving it too much for the first 1000kms. Then go nutts.

Then some swear that you need to show the engine the whole rev range in all the gears (obviously to rev the higher gears you need to dyno it) - and you need to do this in the first 20km-100kms of the engines life. (something to do with the pistons and the o-rings... I dunno)

Then some say do whatever you want cos the engine is already run in from honda... go nuts.

aaronng
09-10-2007, 01:13 PM
The main thing is to not keep it at the same RPM the whole time. Drive it in traffic where you have to accelerate and shift often.

Running in hard is optional.

markCivicVti
09-10-2007, 01:21 PM
The main thing is to not keep it at the same RPM the whole time. Drive it in traffic where you have to accelerate and shift often.

Running in hard is optional.

Would you go as far as dynoing a new engine within the first 20/100/500kms of its life? Have you ever heard of ppl doing this to new cars? Anyone done this? Wrong thread tho :(

aaronng
09-10-2007, 01:26 PM
No point. Dynoing is over very quickly and you will only clock a few kms while doing it.

markCivicVti
09-10-2007, 02:24 PM
Ok thanks aarong - will keep in mind to try and vary the revs a bit when i get my car.

ozR18
09-10-2007, 02:53 PM
dude..i say just relax man..the civic manual has lots to say..have a read..pleanty of info. take it easy during the first 1000kms..look out for weird rattles, noises, shift the gears abit..and you will be fine..i also changed my engine oil after 1500kms .

buddah51au
15-10-2007, 07:51 PM
i have a 06 civic vti auto and at the start i used to get pretty dodgey mileage aswell..something around the 480 per tank...

at the time i thought it was a lemon too but ive done over 20000km now and can get about 550 per tank..

best ive done is about 590km but that was mainley freeway cruising

is running an engine in a myth? as when i first got my car i did my first 1000 in a week..LOL mainly just crusing but at times i would hit 5krpm+.


I am finding the more milage i do, the better the fuel consumption gets. I am now up to 31,000km and in the last 4 weeks i have done 2,102km on 136.95 lts. That = 6.515L/100km. AMAZING.

cracker
15-10-2007, 11:00 PM
is there any sort of difference in the vtec's of the r18a and the k20a of the fd2's?

buddah51au
16-10-2007, 05:55 AM
is there any sort of difference in the vtec's of the r18a and the k20a of the fd2's?

a huge difference

markCivicVti
16-10-2007, 06:23 AM
They are totally different. FD1 being SOHC has the fuel efficient i-vtec implementation. Where as the FD2 is DOHC... so I assume it has the higher revving VTEC kick implementation.

Read up on the R18a, just google R18a review TOV (temple of vtec) - they have a couple of articles on the R18a.

IMO, I don't think anyone should chose the FD2 over the FD1 *just* for the engine... I'd imagine it would be mainly for the different trim. The extra 10kw or so doesn't justify the bigger price. But yeah... it has the leather seats, side curtain air bags etc. So thats all good...

Shimian
16-10-2007, 08:44 AM
My car has done only 8000km. Maybe thats why im getting about 450km per tank where everyone gets 500-600km :(

yesiamaturk
16-10-2007, 11:56 AM
ihonestly think shiman drive your car and dont worry about it because personally i own a 7th gen and i got around 600 if i drive like a grandma but then if ifull on thrash it im talking natio runs being a traffic light hero etc which i did out of a full tank i still got around 480 out of it so the next tank i did half half thrashing cruising and i got about 550 so i wouldnt worry about it too much man i dont know about you but i buy a car and i want to enjoy it not go estatic over my trip metre if it hits 600 or so.