328i vs 320d F30. Dilemma...

[_M_]

Food for thought: the M550d xDrive with its higher compression ratio, more torque & tri-turbo, is stil not as fast as the petrol M5... ..

Standing kilometer comparison:
M550d - 23.7sec
M5 - 21.9sec

 

[ramsing]

M.....but 550d has super fuel economy, compared to the crap M5 la. so what if the M5 is 2 seconds faster, he will have to stop for petrol after 300kms on full tank. my 550d can go twice the distance!! yes, it sounds like a lorry and spews black smoke like a biatch, but from inside the car, i can hear or see anything.

so pls ar, petrol cars should be banned. its just out of style. come, i buy you a TDS badge to stick on your car. pls dont resist the magic of noise smokey black diesel engines

 

[_M_]

Gheeman.. those r million ringgit cars.. u think d owners worry abt fuel money ka?

If M5 can go 400kms, it'l hav over 13min lead before it needs to refuel... thats another food for thought.. :4:..

 

[narayan]

Although the peak torque for 320d is higher than 328i, the 328i torque curve, however, is wider compared to 320d.

Yep.
328i = 350Nm @ 1250-4800rpm
320d = 380Nm @ 1750-2750rpm

320d has 30Nm or 7.9% more than 328i
BUT 328i gets its torque Earlier and Longer ie throughout 3,550 revolutions
While, 320d only gets max torq throughout 1,000 revolutions

torque torque torque
tok tok tok

one of the misconceptions of Diesel's torque is it's relatively short peak ... 1,750rpm - 2,750rpm,
"ooo, diesel ah, afteh Tee Thousan la-pm ah, no moh poweh liau lor.... "

based on the 2 charts below, is it correct to say 320d produces 80%(300Nm) of it's torque from 1,500rpm - 4,200rpm/redline ?

based on e90 320d 177hp (dorcayboy's car - via paultan)

based on bmw's literature

This figures are not phenomenal if you compared it to 328i (350Nm)
but, compared to 320i (270Nm max/peak), 320d's 80%(300Nm) across the entire(almost) rev range is just simply sublime.

and the numbers don't lie
taken from http://www.f30post.com/forums/showthread.php?t=658601

F30 : 80-120Km/h ( 50-75mph)
In 4th gear
335i 5.2s
328i 5.4s
320d 5.9s
320i 7.4s
318d 7.5s
316d 9.3s

 

[Fredo]

hahahaa this is getting interesting....
mine is 320d but i have driven the 328 for sometime as a courtesy car...here are my comments:

the D feels torquey for normal driving...can feel strong pull as u accelerate...but it shifts too early even during spirited driving
while the 328 may not pull tht hard at low to mid rev....but it is fun to drive spiritedly...it revs more than 7krpm and the power is quiet linear and predictable...somehow reminds me of my previous b18c type R civic .....but both D and the potrol made me smile when I drive them...both are good but very different cars

It would be best if there is a car that hv the torque character of the d and at the same time the power band is much wider so that i can rev all the way pass 8k rpm

 

[vieri777]

hahaha. well said narayan
using my butt and grin on my face test
turboD, anytime...everytime
except when i can afford a V8