Fuel consumption

  • Thread starter Thread starter profi
  • 246 comments
  • 43,948 views
snowgt
What's the size of the fuel tank in a real Daihatsu Move? I couldn't find it quickly, but let's assume 40 litres. If you used 1/8, that's 5 litres. 12 laps on Tsukuba are 24 km. That's about 1/4 of 100 km, so you had a fuel consumption of about 20 l/100km, which seems about right for a 180 hp car that's being pushed around a circuit.

So, I would say, the only thing that's not right, is the insert saying you filled in 12 litres of fuel. That could be a bug, but one that doesn't affect gameplay.
Click to expand...

Valid point - that will need further testing.
 
tigermilk
You need to be in the top gear too.
Click to expand...
If you're checking how much time it takes to deplete the fuel tank, you can do it in any gear, provided that the engine is running at full load in a sustained way at peak power.
Since in lower gears by applying 100% throttle, the engine has obviously enough power to make the car accelerate, the solution is using the brake at the same time so that the engine (with 100% throttle) runs at a more or less fixed rpm.
In lower gears it's easier to do than at higher ones, since you don't have to deal with high speeds. GT5 doesn't simulate brake fade or damage, so this is a viable solution.

* * *

Forgot this:

snowgt
What's the size of the fuel tank in a real Daihatsu Move? I couldn't find it quickly, but let's assume 40 litres. If you used 1/8, that's 5 litres. 12 laps on Tsukuba are 24 km. That's about 1/4 of 100 km, so you had a fuel consumption of about 20 l/100km, which seems about right for a 180 hp car that's being pushed around a circuit.

So, I would say, the only thing that's not right, is the insert saying you filled in 12 litres of fuel. That could be a bug, but one that doesn't affect gameplay.
Click to expand...
The real Daihatsu Move (4WD version) had a 32 30 liters fuel tank. A 24 Km / (30/8 liters) = 24/3.75 = 6.4 Km/l fuel consumption for a 180 hp car ran essentially at 100% throttle all the time (it's a drift setup) on a low average speed track is unreasonable.
Again, I've checked with several cars on online races (where fuel consumption is usually enabled), and the most plausible conclusion is that, like in GT4, all cars have the same large fuel tank. According to a quick calculation, as I wrote, all cars have a 120 liters fuel tank. You can try this out yourself in the Arcade mode by enabling fuel consumption on single races. NASCAR stock cars seem those with the higher fuel consumption (since they're the most powerful) among those included by default.
 
Last edited:
xchristox
It's just the price you pay when driving an extremely heavy and immensely powerful 16.4 liter V16!
Click to expand...

Haha, I love this :)

8* litre* (British spelling! *hoists flag* :) ) W16* The 16.4 bit comes from there being 16 radiators and 4 turbochargers, not the common misconception that the 16 is referring to the cylinders.
 
RC45
So yet more evidence that the GT physics engine is still 10 years behind the average PC game based on the gMotor engines.

Not taking fuel load, fuel consumption weight distribution into account is yet another point against thye "reality" of the "Real Driving Simulator".

Perhaps the game should be renamed the "Real Steering Simulator" - since that is about the only thing that is reality based - kind of.

Now for the basic driving fun, that is all one needs. I mean I have a blast with this game, but it is no sim.. ;)
Click to expand...


Didn't you hear what people have said? GT5 cars appear to use a standard 120 litre racing fuel tank. Which is much, much bigger than those of real life road cars. You just jumped in and started to rant about GT5 not being realistic at all without reading.
 
RUI
And we know that in GT4 cars performed better with less fuel weight...
Click to expand...

On a small car all that fuel is going to upset greatly the handling if the suspension set-up doesn't take that into account.
By the way, now that I think about it, my small tuned kei cars have always handled very strangely on online races (where fuel consumption is usually enabled, again), with the rear end being strangely lively (too much!), much more than usual and significantly slower acceleration than usual. I thought this was the result of internet lag, but maybe it's not the case. Note that I usually tune my cars offline in the practice mode time trial, where fuel depletion cannot be enabled.

I think you actually helped me find out why that happens. :scared:

The fuel consumption management in GT5 is seriously flawed, I think ... :nervous:

Fuel weight is taken into account only on races where fuel/tire consumption is enabled.
And 120 liters of fuel is unrealistically too much for many light cars.

Can somebody else confirm this behavior?
I think it's a serious issue/bug.
 
Last edited:
Peter
Didn't you hear what people have said? GT5 cars appear to use a standard 120 litre racing fuel tank. Which is much, much bigger than those of real life road cars. You just jumped in and started to rant about GT5 not being realistic at all without reading.
Click to expand...

I read everything.

And the SIZE of the fuel available is an indication that the overall physics engine i stoo somplisti cto take complex fuel consumption into the mix.


And whether you choose to understand thi sor not, but fuel tank size has a DIRECT impact on vehicle dynamis and thu sis a CORE part of the physics engine and its ability to accuratelt simulate a car.

The fuel has weight.

The fuel has movement and thus dynamically im[act the cars COG and COM.

So - IOW I am correct in my statement that simly tossing ins a 120l tank wihtou REGARD for its impact on th eover all physics is yet again and indication that the GT engine is not very "real".

Unless in your world fuel has no weight.... ??
 
RC45
So - IOW I am correct in my statement that simly tossing ins a 120l tank wihtou REGARD for its impact on th eover all physics is yet again and indication that the GT engine is not very "real".
Click to expand...
If you read my previous post, fuel weight has much impact on car handling (but only if fuel consumption is enabled!). In fact, it makes my tuned kei cars almost undrivable in online races. This is a problem for two reasons:

- On most of the GT Life mode, fuel consumption is disabled, and so is the weight penalty caused by fuel. So users mostly drive and tune their cars without taking it into account
- 120 liters of fuel on light cars affect handling greatly. Problem is, those cars aren't supposed to have such a big fuel tank.
 
SHIRAKAWA Akira
If you read my previous post, fuel weight has much impact on car handling (but only if fuel consumption is enabled!). In fact, it makes my tuned kei cars almost undrivable in online races. This is a problem for two reasons:

- On most of the GT Life mode, fuel consumption is disabled, and so is the weight penalty caused by fuel. So users mostly drive and tune their cars without taking it into account
- 120 liters of fuel on light cars affect handling greatly. Problem is, those cars aren't supposed to have such a big fuel tank.
Click to expand...

I would go on to suggest that wether consumption is turned on or not, to not take the fuel weight into consideration is wrong on Kaz's part.

The placement of the fuel tank impacts the dynamic affect of the fuel weight on the car as well. In a C5 and C6 Corvette where the tank is in the centre of the car its effect is less felt than in cars with the fuel tank more towards the rear of the front.

Even if he determind the "weight" penalty would be half a tank and remain constant *to make the sim less calcualtion intense) and assigned a COG/COM variable to impact car handling and weight transfer we would be better off.

Who knows, maybe they do.
 
I've been doing a little more testing with MY 787B stealth which has ~900bhp. I ran around 30 laps at flatout speeds (in excess of 220mph) at Daytona, and when I pitted in I had roughly a quarter of a tank of petrol left. I then had to refill the car with 69 litres of petrol in the pits to completely fill the tank. I was lapping Daytona within 39 seconds every lap, so over 30 or so laps, that equates to around 20 minutes of track time.

It's getting late here in the UK, but I'm sure there is some clever guy here who could figure out an approximate MPG figure for the 787B, based on the information I have provided. 👍

One thing I will say is that my lap times never improved based on the amount of fuel I was carrying, as the fastest lap I set was done within the first three laps. I was expecting them too, but they never. 👍
 
Zonda R
Haha, I love this :)

8* litre* (British spelling! *hoists flag* :) ) W16* The 16.4 bit comes from there being 16 radiators and 4 turbochargers, not the common misconception that the 16 is referring to the cylinders.
Click to expand...

Actually, you're wrong. The Veyron has 10 radiators. The 16 does refer to the number of cylinders.

On topic, 120 liters fuel tank for every car is just bull****! How would PD let out something so important in motorsport as fuel affecting overall weight, weight distribution and lap times in consequence. It just takes away that advantage that some cars, like the McLaren F1, have by having the fuel tank as close to the center of mass as possible.
 
Actually, if magburner is correct with his fuel consumption and refill figures (a full tank in the 787b would be 100 liters), it could be that only standard cars have such a large fuel tank, or at least, only those I've driven the most in online races with fuel consumption enabled.
 
GOTMAXPOWER
But you're not constantly flat out at 260mph at the nurburgring and I think thats the point Top Gear was making so it's probably pretty real fuel usage.
Click to expand...

I average about 400kph on SSR (high 300s, low 400s). Lap after lap, and I'm amazed at how economical the Veyron is. :dunce:
 
kejbee
Anybody know if the car really stops when you run out of fuel? Or is it like GT4?
At one place in the game it says that the car will stop. True or not?
Click to expand...

It's like GT4.
 
xchristox
Well obviously the gasoline tanks are immensely huge.

The Veyron for example can last about 18 minutes when racing it at full (yeah, Top Gear said it. It's even in the manual!). So the whole tank should be empty in about 20-25 minutes max when racing it. The same with the new Mercedes SLS, the fuel and tires should be long gone after 20-25 minutes TOPS. I've managed to stay 3 times as long on the nurburgring with both cars, racing it to the maximum. Both fuel and tires were obviously wayyyy better then they are in real life.

I think it would be awesome if the fuel went down as quickly as in real life, it would force you to make pit stops way more often. It's just the price you pay when driving an extremely heavy and immensely powerful 16.4 liter V16!
Click to expand...
It's a W16 👍
 
Zonda R
Haha, I love this :)

8* litre* (British spelling! *hoists flag* :) ) W16* The 16.4 bit comes from there being 16 radiators and 4 turbochargers, not the common misconception that the 16 is referring to the cylinders.
Click to expand...

you're wrong. Its basically two V8's mounted next to each other. and i believe it has 11 radiators. you are right by saying it has 4 turbochargers but that is not what the .4 means :dunce:
 
You can destroy the tires on the Veyron after about 30 seconds of doughnuts which is realistic but the fuel tanks are too big.
 
I took veyron on SSR7 where there's lots of top speed. I could do 3-4 laps, which is about 15 minutes, i wouldn't say it has a triple gas tank.
 
dardoonk
When do I get to turn on fuel consumption? Never seems to change right now, but I am only level 17
Click to expand...

it's only available on the extreme races (lv20).

on another note, cars do have different gas mileages in-game. check it, race in extreme then switch cameras to the car you want to check. my R10 gobbles up less fuel than the 88C-Vs and R92s in Like the wind, not by significant amount tho, but it still has better gas mileage than the others :)
 
jonny_goddard
you're wrong. Its basically two V8's mounted next to each other. and i believe it has 11 radiators. you are right by saying it has 4 turbochargers but that is not what the .4 means :dunce:
Click to expand...


The veyron has 10 radiators. An 8 litre 16 cylinder engine in a W configuration and 4 turbochargers.

the 16.4 stands for 16 cylinders and 4 turbochargers.
 
I did the Laguna Seca Endurance (90 laps) in a Formula Gran Turismo yesterday.
I went in to the pit on Lap 30 and 60.
Lap 30: 64 Litres.
Lap 60: 80 Litres.
 
I noticed even in GT4 the Minolta had less fuel economy than the racing R8 and 787B among others.

I also noticed American muscles like the Chevelle and Camaro and the GNX were gas guzzlers in the game too compared to Skylines and Civics.

There is and has been different fuel economies for different cars in the series, at least from GT4 AFAIK, not sure about the other 3, it's been a long time.
 
120L tank is not excessive for a racecar and one common modification for cars that go racing is a larger tank, so if all cars have a 120L tank that would be fine. PD have better things to to than make sure someones favorite fartbox has the correct size tank.

And in GT4 your lap times get faster as fuel is burned so fuel weight was calculated.
 
Pierced Lead
I noticed even in GT4 the Minolta had less fuel economy than the racing R8 and 787B among others.

I also noticed American muscles like the Chevelle and Camaro and the GNX were gas guzzlers in the game too compared to Skylines and Civics.

There is and has been different fuel economies for different cars in the series, at least from GT4 AFAIK, not sure about the other 3, it's been a long time.
Click to expand...

they also do in GT5. check out the other cars' fuel gauges when doing extreme races. my R10 TDI consumes lesser fuel than the 88C-Vs and R92s, for example. the 787B is fuel efficient on the other hand. as far as i can tell, it's a little bit better than my R10.
 

Latest Posts

Back