Bought a new ZR1 the other day and when I changed the oil it had 649hp (in reality it should be 638 but anyway) and I raced with it a few times and have around 64 miles on the clock and suddenly the hp has shot up to 658 and seems to keep on going. So is it going to keep on increasing indefinately until I have 1000hp or what??? Is there anyway to prevent this and does the performance of the car keep on increasing or is it simply a glitch?
Why does horsepower keep increasing?
- Thread starter Ryan81
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- Jersey V.1.0
- axletramp
I agree about the oil change but sometimes it does say that the oil is OK and won't let you change it. But IRL engines will loosen up and give more power (if run in correctly). Quite often if you dyno'd a car with delivery mileage and then at say 20k miles it will be producing more power. So if, for example, you get a 10% increase in power that would be quite a chunk on a car with a starting point of 600+hp.
![[Nor]MclarenF1](/forum/data/avatars/m/169/169289.jpg?1413287138){kind=avatar}
- 2,281
- Moss
- hoydeskrekk
Don't forget that alot of car manufacturers do underquote the factory bhp-figures (particularly on performance cars).
I would assume to avoid potential law suits from pissed off customers.
I would assume to avoid potential law suits from pissed off customers.
- 448
Remember, that's only a 3-4% gain you've seen, you probably won't see 20+ hp gain from a 150hp car. A well broken in engine gains power by sealing the piston rings and breaking in all the moving parts, which reduces friction (which causes power loss).
Kinda like when you break in a good pair of jeans, it's easier to kick ass 👍
- 1,173
- Drex81
True very true. Love an old pair of jeans!
If you also look at most Japanese sports cars they say 276 hp. But once u buy them skylines get to 309. Thats before any oilchange. Numbers are low. New engines need to break in. More POWER for us!
If you also look at most Japanese sports cars they say 276 hp. But once u buy them skylines get to 309. Thats before any oilchange. Numbers are low. New engines need to break in. More POWER for us!
veyron1001
(Banned)
- 343
play with your pp and it will go down again
- 98
- USSoccerFan96
No glitch, the engines just break in and give more power with the mileage. Each car has it's maximum (depending on the tune) from which it will then gradually decrease. Don't worry though, this does take some time.
Also, if you change the oil after the engine "breaks in" is it supposed to reset your HP? Because one time I had say 700 HP on a new car after oil change, then drove it a ways, and the HP was at say 720, then got an oil change and it went back to 700 some..
- 248
- darclio
up and down 
Wiegert
Premium
- 13,398
- United Kingdom
True, this is the case with most Japanese cars that have between 200 and 300 HP. For example, I went to buy an Evo VII GT-A which apparently had 268 HP, but as soon as I bought it, the power increased to 303 HP without changing the oil. Giving it an oil change boosted the power up to 324 HP. I've also noticed this happen when I bought a Premium Impreza a while back.
- 6,804
- The Netherlands
The describtion you can read when you do an oilchange in GT5 says the oil the car came with gets changed for a higher grade (or high-performance) motor oil which in real life also increases the engine performance depending on which car, so there's logic to the horsepower increase although it might be exaggerated somewhat being a videogame after all.
Also the horsepower increase (and eventual decrease) after putting down some mileage is also a real life occurance, although it again might be exaggerated or speeded up and as said before the figures given by manufacturers themselves aren't always entirely reliable either.
