D3 vs D5 - Direct comparison

[wimorrison]

Originally Posted by Daleman

Hi r-designbob

Mainly Dales A and B roads and roads in North Yorkshire and the Lake District.

The power unit and auto gear train seems very high geared and always seem to be revving too low in my view ( probably my low speeds because of slow traffic flow) . Plenty of power though when you want it and performance is effortless when you can find a road suitable. I am used to putting an auto in drive and leaving it but I do find myself putting this into manual to keep the revs up a bit .You could run round all day in 5th manual on most roads as 6th is high geared in auto and best really on a dual carriageway. Average speed is reading a low 29MPH up to now.

Out of interest was you last car a diesel?

Many people coming from petrol engines think diesels 'rev' too low, but that is the intrinsic benefit of the diesel - it has the torque at much lower revs than the petrol engine

[Daleman]

Originally Posted by wimorrison

Out of interest was you last car a diesel?

Many people coming from petrol engines think diesels 'rev' too low, but that is the intrinsic benefit of the diesel - it has the torque at much lower revs than the petrol engine

Hi wimorrison , my last car was petrol Mercedes and I realize that diesels are lower revving but I am often finding myself trickling along at 50mph with 1500 revs on and that seems to low to me .

I wonder if the exhaust gets hot enough to even carry out the regeneration if its running low revs and cool.

I am wondering Is it not the low mileage trips and possible resultant cool running that causes that oil increase problem with those having the problem.

[wimorrison]

Originally Posted by Daleman

Hi wimorrison , my last car was petrol Mercedes and I realize that diesels are lower revving but I am often finding myself trickling along at 50mph with 1500 revs on and that seems to low to me .

I wonder if the exhaust gets hot enough to even carry out the regeneration if its running low revs and cool.

I am wondering Is it not the low mileage trips and possible resultant cool running that causes that oil increase problem with those having the problem.

Very probable that this contributes to the issue.

I have said in previous posts that I think a major issue is that the exhaust is not getting hot enough due to short journeys which are not long enough for regeneration to take place, it may be that journeys at lower revs result in the same issue - cool exhausts

[Daleman]

Originally Posted by wimorrison

Very probable that this contributes to the issue.

I have said in previous posts that I think a major issue is that the exhaust is not getting hot enough due to short journeys which are not long enough for regeneration to take place, it may be that journeys at lower revs result in the same issue - cool exhausts

Yes I have taken on board all you have said regarding the matter hence my trying to keep a reasonable level of revs up to try and keep exhaust temperatures high.
I also wonder if the two stage turbo in the D5 205 is better with regard to this than the single stage 2.4. Another poll to establish if it’s D5 or 2.4s that’s having the oil problems might be handy.

[NewVolvo]

Originally Posted by Daleman

Don’t know how you got 47 MPG on the D3 auto I am getting 37 and it doesn’t look like it will get much better!

I only know what the readout was. But saying that, very long empty roads in northeastern Germany & Poland helped probably. It truly was phenominal on the fuel consumption.

Originally Posted by Daleman

Yes I have taken on board all you have said regarding the matter hence my trying to keep a reasonable level of revs up to try and keep exhaust temperatures high.
I also wonder if the two stage turbo in the D5 205 is better with regard to this than the single stage 2.4. Another poll to establish if it’s D5 or 2.4s that’s having the oil problems might be handy.

My D5 certainly had the high oil level issue. Been fixed now.

[Daleman]

Having just completed the first 1000 miles in the D3 Geartronic the MPG looks to be averaging 36.9mpg.

That’s steady driving on A & B roads with a 30MPH average showing on the computer.

Cannot touch the 47MPG achieved by New Volvo in this original posting.

[wimorrison]

Originally Posted by Daleman

Having just completed the first 1000 miles in the D3 Geartronic the MPG looks to be averaging 36.9mpg.

That’s steady driving on A & B roads with a 30MPH average showing on the computer.

Cannot touch the 47MPG achieved by New Volvo in this original posting.

There seems to be a great variation in the mpgs that people are returning - there is a post (can't recall find it now) where the poster was returning that mpg on a D5 with similar mileage.

Out of interest is the D3 FWD or AWD? I expect that the AWD on the D5 would eat up some fuel as would the additional 30bhp on the D5, which would make me think that your mpg is low

Hopefully it will get better as the car wears in.

[Clan]

Originally Posted by Daleman

Hi r-designbob

Mainly Dales A and B roads and roads in North Yorkshire and the Lake District.

The power unit and auto gear train seems very high geared and always seem to be revving too low in my view ( probably my low speeds because of slow traffic flow) . Plenty of power though when you want it and performance is effortless when you can find a road suitable. I am used to putting an auto in drive and leaving it but I do find myself putting this into manual to keep the revs up a bit .You could run round all day in 5th manual on most roads as 6th is high geared in auto and best really on a dual carriageway. Average speed is reading a low 29MPH up to now.

This new D3 is tuned very differently to the old D5 the latter used to love to rev and produced power up to about 5000 rpm , however the D3 max power is at 3800 rpm so no point in going over that ... the gearing is chosen appropriatly i would think ... the boost pressure is higher in the D3 to the older D5 engines

[Brodick]

Originally Posted by wimorrison

There seems to be a great variation in the mpgs that people are returning - there is a post (can't recall find it now) where the poster was returning that mpg on a D5 with similar mileage.

Out of interest is the D3 FWD or AWD? I expect that the AWD on the D5 would eat up some fuel as would the additional 30bhp on the D5, which would make me think that your mpg is low

Hopefully it will get better as the car wears in.

The D3 versions only come in fwd.

[Teejay1]

Originally Posted by Brodick

The D3 versions only come in fwd.

In certain geographical locations anyway.