5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
Hello, you probably get this question a lot.
I would like to know wich car is better to buy from e39 models
i have in option
523i from 1999 (i dont know if its double vanos) 142.000 km
525i from 1997 (its kinda old so i think its simple vanos) 130.000 km
520i one from 1996 (125.000 km) and othere from 1998 (175.000 km)
its gonna be my first bmw so i'm kinda scared that i'll make the wrong choice.
i would like to know wich is better ( fuel consumption, performance, relaibility,easyer to mend and easyer to modify at the engine )
for example i would defenetly have the 523i if that engine could be modified to 192 hp as the 525i without spending to much money
please i might be a newbie but i really dont want to buy the wrong car
the intake will help mpg, as will the exhaust.
remember, cold air is denser=better burn(simplified).
helping the engine inhale exhale will both bump up mpg and performance.
but with the chip i'm pretty sure it only comes into play when you are in higher RPMS.
the chip frees up power that the factory ecu is "hiding". so if you are redlining your call all day long and driving it to its maximum performance level everyday...then NO none of these mods will help or hinder your mpg, you would be the one screwing that up.
if you drive the car normally your gas millage will likely increase a good amount(with mods i listed in former). you want a performance machine and you want power, so i suspect you will have it WOT on your on-ramps, stop lights, etc. and you will very much enjoy it.
as for city driving, commuting, keep that heavy foot undercontrol and your mpg's will not be affected.
discalimer: most companies mention that their performance products increase mpg when used in NORMAL driving applications.
thx u did
1 more question
as i know from 1999 they started to make double vanos at 523i
but if i go and see the car how can i tell the difference coz i dont want to be scammed ...
here in my country its very likely to get scammed .
+ what sould i check before buying the car?
i think you could use the VIN number to figure that out, but not exactly sure.
do you plan on having a mechanic look over the car first? should only be about 100$
he could tell you for certain about the double vanos, but if you do some searching you could find the VIN number that indicates the double vanos(possibly even call dealership and ask)
as for checking if its solid;
-look for rust
-overspray from repairs(indicates accidnet and repair)
-push on all four corners, shouldn't wobble
-let it idle for a while, make sure it doesn't over heat
-drive it, see how it feels, listen to it.
-get under the car and look around.
-bring a friend, second non-biased opinion will HELP you tons
the engine should be a M52TU, and that should be on the engine somewhere, or car.
the part with the mechanic is not and option they'll do more harm then good to the car.
last time i took a bmw my uncles car to the service at a bmw dealearship they didnt fix the engine they made it worse ... so worse that we had to complet oil every 100km.
then somehow we repaired it at home.
thx for the heads up i wouldhave forgotten to check all for parts to see if its wobble
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