PD seems to have actually fixed that...

[elrousso]

OK here's the setting :

I'm on lap 68 of the Laguna Seca 200, in second place, about 5s behind the leading Viper GTS, and we both enter the pits at the end of the lap. His pit area is about 2 spaces in front of mine. Now at this time I'm thinking, I'll come out of the pits before the Viper, and since I'll be faster on brand new tyres (as was the case since the beginning of the race) I'll hopefully be able to hold enough time in front to cross the line in first...

He's in front of me so he gets to his pit area first, I can see the pit crew jacking up the car and working on the wheels while the refuel guy stands on the side of the car and does his job (and I can see my own crew doing the same thing as well), so naturally the Viper's crew finish replacing the wheels before my own workers. I entered the pits with 7L of fuel left in the tank, and realize I'll need about 31L more for my final stint, so I dialed in 35L (as I always do, a little more for insurance) while I was driving on the pit stretch.

Amazingly, the Viper's refueling ends before mine !! Now, as every endurance racer out there already knows, the way GT handled the AI pitstops in the past, they were refueling every AI car with a full tank each and every single pitstop, but in this case, it seems the AI was actually "intelligent" enough to calculate what he would need in terms of fuel for the remainder of the race !

The Viper had pitted on lap 34 before that (and then on lap 68, so two equal 34-lap stints), so there were 22 laps remaining in the race, since we were at the end of lap 68. It also surprised me to see that, because I don't think the Viper would be more economical than the car I was driving, since he had a bigger engine (I mean way bigger, almost double the displacement)...

Someone witnessed this before, or can shed some light on this kind of situation ? I'll actually be amazed if this comes out to be true, because that was one thing that made the endurances races "predictable" in the past, but if this has been fixed, then we'll have to put some more thought into endurance racing in GT5...

 

[HN7]

Yes, the AI now only take enough fuel depends on how long their tires last. You can see this in B-spec as well. It was a pleasant surprise the first time I saw it.

 

[Welsh-Fury]

The reason why this is done because the cars are lighter with less fuel in the tank. Yet another nice addition to GT5. ^_^

 

[apex28del]

Thank you for pointing this out!

There are so many glaring oversights in GT5 that many jump to point out (and rightfully so), but what really makes the game such a winner is the attention to detail in areas just like this

 

[kayman]

Thank you for pointing this out!

There are so many glaring oversights in GT5 that many jump to point out (and rightfully so), but what really makes the game such a winner is the attention to detail in areas just like this

Hardly, other games have been doing it for years. Not trying bag out GT5, but this should have been expected from the start!

 

[dark_ruffo]

I don't know.

4h of Nurburgring. 4th lap, side by side with the Amuse s2000 GT1, we both enter the pits, I see I've only used 45 liters of my tank so I decide not to refuel for my next 4 laps stint. Took an almost two minutes lead after the boxes since the S2000 stayed to refuel the whole 100liters it seems.

 

[Tired Tyres]

I suspect that the AI will fully refuel at each stop except the last one where it will get enough fuel to get to the end.

When I did my first endurance race I noticed that the amount of fuel automatically highlighted was always a lot more that I needed so I had to change it, but on the last stop the correct amount of fuel to reach the finish was highlighted so I added a few litres as a safety margin. Perhaps this is the same for the AI?

 

[daan]

I don't know.

4h of Nurburgring. 4th lap, side by side with the Amuse s2000 GT1, we both enter the pits, I see I've only used 45 liters of my tank so I decide not to refuel for my next 4 laps stint. Took an almost two minutes lead after the boxes since the S2000 stayed to refuel the whole 100liters it seems.

It could be that the Laguna Seca race has a finite number of laps, so the AI can calculate fuel to do the remaining laps.

The 4 hour of Nurburgring doesn't have a set number of laps, so perhaps the AI can't quite work out "the time left is this, so I'll fit in how many laps" equation, so fills all the way up just to be sure.

Maybe.

 

[ASH32]

The A.I will take on the amount of fuel it needs to finish the race at the first opportunity it gets, eg as soon as it needs less than a full tank, before that it just fills the tank to the max all the time. If you don't touch anything when you pit, it does the same for you too. Obviously with timed endurance races it has no idea how many laps it still has to do, so it will fix up the tank at every pit stop.

 

[Zathra5_]

There is another problem with the AI pitting. If they pit at around the third to last lap, they will put enough gas in to finish the race which is good but that amount is likely to be lower than the AIs threshold to pit. They will therefore pit again the very next lap. That was a problem for some of the FGT races in B spec where one tank was not quite big enough for the entire race.

 

[C.D]

The reason why this is done because the cars are lighter with less fuel in the tank. Yet another nice addition to GT5. ^_^

Yea, no.

I'm doing a Super GT online league with friends and I've done several 30+ laps races/tests and haven't noticed any difference in lap times/handling with up to 40 less liters of fuel in the tank.

 

[StevenDunn99]

Sorry guys but be aware it is inconsistent. I was keeping an eye on Bob during a Suzuka 1000km. He pitted and refueled near the end of the race but then pitted again for fuel (tyres were ok) at the start of the last lap, when he had enough to finish. The next time I caught him doing it I cancelled the pit command and he finished fine.

 

[SoMe0nE2tAlK2]

The A.I will take on the amount of fuel it needs to finish the race at the first opportunity it gets, eg as soon as it needs less than a full tank, before that it just fills the tank to the max all the time. If you don't touch anything when you pit, it does the same for you too. Obviously with timed endurance races it has no idea how many laps it still has to do, so it will fix up the tank at every pit stop.

This is what I've noticed.

In B-spec sometimes I watch the competition after they pit to see fuel levels. They always top off unless it's their last pitstop.
It's funny how on indy 500 they pit 5 laps before they finish

 

[RacingManiac]

The fuel amount they "default" you when you enter the pit is probably the same as what AI uses. Which most of the time if the race is still long they will top you off(unless you choose otherwise). And on your "last" stop it'll be the amount of fuel you need to finish. In most races with the tire wear being the main reason to pit, I don't usually use the default fuel because of that, since most street car races you can get 2 sets of tire in before you run out of gas...

 

[elrousso]

The fuel amount they "default" you when you enter the pit is probably the same as what AI uses. Which most of the time if the race is still long they will top you off(unless you choose otherwise). And on your "last" stop it'll be the amount of fuel you need to finish. In most races with the tire wear being the main reason to pit, I don't usually use the default fuel because of that, since most street car races you can get 2 sets of tire in before you run out of gas...

From my experience, the fuel amount that is "default" when I enter the pits seems to be the amount I spent since I started the race / the last time I pitted... Looking at the gauge at the same time, it seems to add up to 100L.

 

[crowhop]

A and B Spec pitting is totally different.
Just wait until B-Spec 24 Hours of Le Mans where the other 11 pit every single lap because the driver is tired...and because they pit every lap, there's no time for him to recoup. It's a joke.