Fuel consumption

  • Thread starter Thread starter profi
  • 246 comments
  • 42,206 views
They might change it to be more realistic in a patch. I heard something about fuel consumption being dependent on how hard you are driving being added on later.

FYI: Veyron has a 8 liter W16. the ".4" stands for the 4 turbochargers
 
I was racing my Veyron earlier at Daytona Speedway, and it used a more than a quarter of a tank of fuel, and the front tyres were at half power after around five or six laps... (I was averaging around 250mph)

I was shocked at how quickly both my fuel, and tyres had degraded. 👍
 
Try the Tesla. Although its electric, its the car that consumes its energy source the quickest. Did 3 laps in Cape Ring, and the battery was at 3 quarters of its full charge. Very nice car, by the way. It sounds like its going to take off at 150+ KMH
 
magburner
I was racing my Veyron earlier at Daytona Speedway, and it used a more than a quarter of a tank of fuel, and the front tyres were at half power after around five or six laps... (I was averaging around 250mph)

I was shocked at how quickly both my fuel, and tyres had degraded. 👍
Click to expand...

Personally, I've been shocked by the fact that my tuned Daihatsu Move (730 Kg, 180 hp, 4WD), after a dozen laps at Tsukuba, used up a bit less than 1/8 of its fuel tank, and when I entered the pits, I was able to refill up to 12 liters of fuel, which means it's probably got a 120 liters fuel tank (if 1/8 = 15 liters, 15*8 = 120 liters).
I don't dispute the Veyron fuel consumption (seems about right; fuel tank size is too, although in real life it's got a 100 liters tank), but other cars (especially small ones), when fuel consumption is activated, appear to have an extremely huge tank, almost impossible to deplete. By pitting in to refill consumed fuel and doing a quick calculation, it's clear that PD haven't fixed this issue since GT4 (actually they made it worse in some ways).

Large racing fuel tanks could have been implemented in the game a component of racing modifications.
 
ok well 12 minutes at full speed and the whole tank is empty. It's impossible to go full speed for 12 mins on nurburgring but you're constantly accelerating and hitting the redline after short periods of braking. I don't think it should last for almost an hour!

and as SavageEvil said, it would be freakin' great if you had to make choices considering the cars weight, fuel consumption, gasoline/diesel etcetera it would seriously add another dimension to endurance racing offline and online.
 
SHIRAKAWA Akira
Personally, I've been shocked by the fact that my tuned Daihatsu Move (730 Kg, 180 hp, 4WD), after a dozen laps at Tsukuba, used up a bit less than 1/8 of its fuel tank, and when I entered the pits, I was able to refill up to 12 liters of fuel, which means it's probably got a 120 liters fuel tank (if 1/8 = 15 liters, 15*8 = 120 liters).
Click to expand...


120 liters??? My car in real life has a 25 liter tank.
 
nickg07
its true.

diesel R10 ftw!! 35mpg*


*BS i just made that up. but your right, if u want a 16litre turbo, then downside of this is that it drinks petrol much faster than i can pour water down the plughole?
Click to expand...

Its 40mpg. The diesel Audi's make 40mpg at race speeds cranking out 800bhp. Hence the FIA implaced regulation on diesel cars to limit their tanks to 100 liters. Before they didn't pit that much and had enough power to walk away from anyone that dared race with them. After that rule though, everything seemed to change.
 
MiniMarco
120 liters??? My car in real life has a 25 liter tank.
Click to expand...

Yes, 120 liters. I'm obviously referring to GT5.
It seems that all cars in GT5 have got a 120 liters fuel tank, from my observation.
In GT4 all cars had an 80 liters fuel tank.
 
SigmaViper11
Its 40mpg. The diesel Audi's make 40mpg at race speeds cranking out 800bhp. Hence the FIA implaced regulation on diesel cars to limit their tanks to 100 liters. Before they didn't pit that much and had enough power to walk away from anyone that dared race with them. After that rule though, everything seemed to change.
Click to expand...

Bull****. No way does a race engine get 40mpg (diesel or not). No way. No how.
 
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?
 
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...

They also said that they tested it when it was on their track and it ran on 1 mile per gallon
 
So since the fuel takes are super huge....I guess fuel weight isn't calculated? That can make quite the change in a car's balance especially if the tank is way in the back.
 
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.. ;)
 
Scotracer
That's not how it works. Remember drag force squares with velocity and drag power is the cube of velocity. It's an exponential so if the car uses its fuel in 18 minutes @ 253mph it doesn't mean it'll use it in anywhere close to that at lower speeds.
Click to expand...

Fuel burn is basically how fast the engine spins. Accelerating at full throttle = running at full speed. The engine generates the same power regardless of speed.

EDIT, well, you won't be at max RPM constantly, but it will still be pretty high on average.
 
SHIRAKAWA Akira
Personally, I've been shocked by the fact that my tuned Daihatsu Move (730 Kg, 180 hp, 4WD), after a dozen laps at Tsukuba, used up a bit less than 1/8 of its fuel tank, and when I entered the pits, I was able to refill up to 12 liters of fuel, which means it's probably got a 120 liters fuel tank (if 1/8 = 15 liters, 15*8 = 120 liters).
I don't dispute the Veyron fuel consumption (seems about right; fuel tank size is too, although in real life it's got a 100 liters tank), but other cars (especially small ones), when fuel consumption is activated, appear to have an extremely huge tank, almost impossible to deplete. By pitting in to refill consumed fuel and doing a quick calculation, it's clear that PD haven't fixed this issue since GT4 (actually they made it worse in some ways).

Large racing fuel tanks could have been implemented in the game a component of racing modifications.
Click to expand...

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.
 
I haven't read the thread, but I have done the first two endurance races. Stealth SLS AMG and Mazda Roadster '07. Racing: Soft and fully tuned. I was using tyres and fuel a lot quicker on the SLS AMG than the Mazda.
 
You burn less fuel when you aren't over revving the engine and constantly lead footing the accelerator. Didn't know that engines generate the same power at all engine speeds, news to me better not let that Veyron idle more than 10 mins you'd be out of gas. Fuel consumption changes only by how you intend on increasing your speed, if you gradually do it, you'll burn a lot less fuel and if you're aggressive you tend to burn a lot more. Accelerators basically pour more fuel on the fire and open up more ports, thus using more fuel to increase the power output of the engine at a faster rate. Smooth gradual acceleration will still burn fuel, but since it's less abrupt the initial dump won't be coming out as flames in your exhaust. Inefficient combustion FTW!
 
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...

No ISI game really impresses me as a supposed sim, either. They get bogged down with the anal "spotter" rubbish and don't really focus on the driving. Although online I'm sure it's fine, I just don't like the feel of their physics engine; "industry standard" or otherwise... Just so you know, "gMotor" is the graphics engine. There is no one physics engine powering all ISI titles, it's "evolved" over the years. I doubt the commercial games are anything like the versions they supposedly supply to racing outfits, either (they probably wouldn't run on the average PC).

Exorcet
Fuel burn is basically how fast the engine spins. Accelerating at full throttle = running at full speed. The engine generates the same power regardless of speed.

EDIT, well, you won't be at max RPM constantly, but it will still be pretty high on average.
Click to expand...

It's throttle position (desired or applied, according to electronics) and engine speed. Where the engine's power (as interpreted through the drivetrain and tyres) balances the air and rolling resistance is your top speed. That, roughly, is maximum power. Driving normally on a circuit, changing up through the gears, braking, trailing the throttle etc. means that the engine is almost never putting out its maximum power, so is almost never at maximum consumption, but is certainly close at times.

Wikipedia claims the Veyron's top speed fuel economy is 5.3 litres per minute, but that would mean a 60 litre tank, when it's supposed to have a 118 litre tank. So either 12 minutes is wrong, or the fuel economy figure is fudged. Or the whole lot is a heap of rubbish.
 
i didn't my first endurance race and it believe my corvette zr1 em held 100 litires and it did the math. it took me 32 laps to run out of gas. at 3.07 miles per lap. is about 100 miles. and it had 25 gallons so I averaged roughly 4 mpg. -
 
SavageEvil
You burn less fuel when you aren't over revving the engine and constantly lead footing the accelerator. Didn't know that engines generate the same power at all engine speeds, news to me better not let that Veyron idle more than 10 mins you'd be out of gas. Fuel consumption changes only by how you intend on increasing your speed, if you gradually do it, you'll burn a lot less fuel and if you're aggressive you tend to burn a lot more. Accelerators basically pour more fuel on the fire and open up more ports, thus using more fuel to increase the power output of the engine at a faster rate. Smooth gradual acceleration will still burn fuel, but since it's less abrupt the initial dump won't be coming out as flames in your exhaust. Inefficient combustion FTW!
Click to expand...
They don't. Power=torque*angular_velocity or also force*velocity, where force is the forces resisting motion (rolling resistance, aero drag, etc). While there are some differences in efficiency between gears (e.g., going X mph in gear 3 and going X mph in gear 4 will be the same speed and different revs, but due to slight changes in efficiency of the gearing power demands will be different by a SMALL amount). Amount of fuel burned is really just work done, and work=power*time, or power equals derivative of work with respect to time.

Regarding the veryon, a rough approximation would be if you are certain of fuel capacity of the actual car and believe Top Gear's statements, just take the average speed around the 'Ring. Time to run out of fuel would just be time_topgear*(speed_topgear/speed_GT5)^2. It will be a little off due to both elevation and accelerations/coasting, but it should get you in the ballpark.
 
Griffith500
No ISI game really impresses me as a supposed sim, either. They get bogged down with the anal "spotter" rubbish and don't really focus on the driving. Although online I'm sure it's fine, I just don't like the feel of their physics engine; "industry standard" or otherwise... Just so you know, "gMotor" is the graphics engine. There is no one physics engine powering all ISI titles, it's "evolved" over the years. I doubt the commercial games are anything like the versions they supposedly supply to racing outfits, either (they probably wouldn't run on the average PC).
Click to expand...

Well aware, but tossing out the gMotor name was an attempt to include some less techie folks who may not know the "family" of 3D engine by any other reference.

And their commercial version of the physics engine is far more indepth in certain areas and not much more in depth in other less impactful areas. The sim engine is often used to simulate results rather than as an input based simulation "play interface" the way we use it.

And the commercial engine has no real special hardware requirments.
 
I think I'm going to post a video of a veyron contrantly redlining. Then we'll see if it really is empty in 12 minutes.
 
Bounkazz
I think I'm going to post a video of a veyron contrantly redlining. Then we'll see if it really is empty in 12 minutes.
Click to expand...
Make sure you run the engine constantly at full load just before the rev limiter engages.
To make the job easier you might want to try to use the brake and the throttle together at a lower speed, to make it stay full throttle at peak power. What's important is that the engine is running at full power, rather than at top speed (which would be harder to maintain anyway).
 
Owen.C93
Will have to be top speed though, not just in 1st gear.
Click to expand...

If brakes are applied at the same time so that the throttle is 100% pressed at sustained peak power (6000 rpm?), it's the same thing. The fuel tank should deplete in the same amount of time.
 

Latest Posts

Back