[CraigUK]

Posted this on the 5 forum but as the engines are shared with the 3 then figured I may get a better response here.

Just a quick post to ask if anyone has taken the time to research what if any hardware differences there are between the 520d and 525d, presumably it's more than just a different engine map?

[Nick the Greek]

320d is single turbo.
325d is two turbos.

[CraigUK]

Thanks Nick, so like the old 123d. For some reason I thought that they were both using twin scroll.

[Nick the Greek]

That's right, just like the old 123d.

The engines are of course being replaced next year with the B series. As the 1 series and 3 series LCIs are launched.

BMW marketing have latched onto this "twin power" slogan, that makes people think two turbos, when they are really twin scroll single turbo.
The only diesels that have two turbos are 325d and 335d.

[Carjack]

None the less even with just a twin scroll single turbo, the power lag is negligible.
The 320D has an excellent alround performance engine, which is hard to beat and this is proved in its sales

[CraigUK]

Thanks all, the reason I asked is that I noticed both Hartge and Steinbauer are both quoting outputs comparable to a standard 325/525D from their tuning boxes for the 320/520D.

[Buster Blue]

Originally Posted by Nick the Greek

320d is single turbo.
325d is two turbos.

Easy Nick getting a little worried about your knowledge re the black stuff!!

[CraigUK]

Originally Posted by Buster Blue

Easy Nick getting a little worried about your knowledge re the black stuff!!

Recon he's a closet tractor driver 😄

[teaston]

IMO if you're looking at a 25d then you want more power, so you might as well go that little bit further and get a 30d, even more power and more refined/sounds better! And 30d are cheaper to lease than 25d's due to better discounts and stronger residuals!

[....,,,,..,,..]

Originally Posted by teaston

IMO if you're looking at a 25d then you want more power, so you might as well go that little bit further and get a 30d, even more power and more refined/sounds better! And 30d are cheaper to lease than 25d's due to better discounts and stronger residuals!

+1

It's a choice between 4 cylinder clatter v 6 cylinder smoothness

[Pablo68]

Originally Posted by Brigand

+1

It's a choice between 4 cylinder clatter v 6 cylinder smoothness

And the 6 cylinders get extra equipment as standard (or used to)

[Defero]

Originally Posted by teaston

IMO if you're looking at a 25d then you want more power, so you might as well go that little bit further and get a 30d, even more power and more refined/sounds better! And 30d are cheaper to lease than 25d's due to better discounts and stronger residuals!

Fair points, however if you want a manual and a diesel then a 325d is the most powerful option as there is no manual option in the 330d/335d.

I would be interested in the residual values on the 325d, as there aren't many around.

Some have also argued that a 325d would handle better than a 330d due to the lower engine weight.

[....,,,,..,,..]

Originally Posted by Defero

Fair points, however if you want a manual and a diesel then a 325d is the most powerful option as there is no manual option in the 330d/335d.

I would be interested in the residual values on the 325d, as there aren't many around.

Some have also argued that a 325d would handle better than a 330d due to the lower engine weight.

Having used the auto box with the Diesel engine I can't see any situation where I would consider marrying up a diesel and manual.

Petrol and manual yes but not a Diesel engine.

[teaston]

Originally Posted by Defero

Fair points, however if you want a manual and a diesel then a 325d is the most powerful option as there is no manual option in the 330d/335d.

I would be interested in the residual values on the 325d, as there aren't many around.

Some have also argued that a 325d would handle better than a 330d due to the lower engine weight.

Why would anyone want a manual now the autos are quicker and more economical, in addition to all the other advantages of an auto?

[Defero]

Originally Posted by teaston

Why would anyone want a manual now the autos are quicker and more economical, in addition to all the other advantages of an auto?

No idea I have a 325d Auto
Not everyone wants the same things choice is a beautiful thing.

[pedroF31]

Originally Posted by teaston

IMO if you're looking at a 25d then you want more power, so you might as well go that little bit further and get a 30d, even more power and more refined/sounds better! And 30d are cheaper to lease than 25d's due to better discounts and stronger residuals!

Yes, if you also want the extra purchase cost, the extra insurance cost, extra tax cost, extra fuel cost, extra weight in the front etc I couldn't agree more !

[....,,,,..,,..]

Originally Posted by pedroF31

Yes, if you also want the extra purchase cost, the extra insurance cost, extra tax cost, extra fuel cost, extra weight in the front etc I couldn't agree more !

Don't forget the extra power, the extra smoothness, the extra cylinders, the extra discount that was being given on 6 cylinders.

Admittedly the 325 does have that extra clatter but I supposes the 6 pots can't have everything

[Buster Blue]

Originally Posted by CraigUK

Recon he's a closet tractor driver 😄

[Nick the Greek]

Very upset about how much I know about diesel engines........

I'm off to see my psychiatrist.

[teaston]

Originally Posted by pedroF31

Yes, if you also want the extra purchase cost, the extra insurance cost, extra tax cost, extra fuel cost, extra weight in the front etc I couldn't agree more !

They're not more expensive to buy as there are better discounts and better residuals. Insurance cost is negligable, my 330d cost £350pa fully comp with £100 total excess and 9 points on my licence! Fuel is also negligable, even if you do 20k per year you might save £50 if your lucky. 330d is only 50kg heavier, and is actually 20kgs lighter than the M3!

Oh and.......... the 330d and 325d are in the same tax band, so cost exactly the same (band D, £110pa)!

[Defero]

Originally Posted by teaston

They're not more expensive to buy as there are better discounts and better residuals. Insurance cost is negligable, my 330d cost 350pa fully comp with 100 total excess and 9 points on my licence! Fuel is also negligable, even if you do 20k per year you might save 50 if your lucky. 330d is only 50kg heavier, and is actually 20kgs lighter than the M3!

Oh and.......... the 330d and 325d are in the same tax band, so cost exactly the same (band D, 110pa)!

Not if you buy an F31 auto
330d is the band above!

135 g/km in a 330d and 127 g/km 325d auto

The f31 325d auto is 50kg lighter, given that that the cars have the same body and brakes etc then that's pretty much 50kg extra over the front in 330d.

[pedroF31]

Originally Posted by Defero

Not if you buy an F31 auto
330d is the band above!

135 g/km in a 330d and 127 g/km 325d auto

The f31 325d auto is 50kg lighter, given that that the cars have the same body and brakes etc then that's pretty much 50kg extra over the front in 330d.

Well said Defero - it's so refreshing on here when correct facts are stated

When I got my car the 330d WAS more to buy / PCP and WAS more to insure than the 325d.