XC90 B5 engine seems under powered

[Cull06]

Im sorry - But you’re driving a truck of an suv, a big one at that, with a 2.0litre engine.

I’ve driven it myself and found it fine for getting around and indeed it’s pretty much a lush car. But it’s not a car for acceleration and quick overtakes.

If you’re coming from a 700 torque tuned Touareg then I’m not surprised it feels sluggish..!

[Director76]

If you need a rocket ship XC90, T8 is your only option.

And that’s as a straight line performer, curves are not its natural habitat...

[Haldex]

Originally Posted by Chrismccann

Is the turbo not being spooled up by the electric motor? I would think the engine is similar to the D5 except for electric motor and whilst their BHP and Torque are the same their official 0-62 times are different (B5 being faster).

No, turbo is unassisted on B engines - unlike the PowerPulse engines, where compressed air assists the turbo spoolup.

Electric motor is actually a starter-generator, which just assists the ICE on startup and takeoff and acts as a generator for recuperation.

[techwatcher]

Originally Posted by Haldex

No, turbo is unassisted on B engines - unlike the PowerPulse engines, where compressed air assists the turbo spoolup.

Electric motor is actually a starter-generator, which just assists the ICE on startup and takeoff and acts as a generator for recuperation.

Hi Haldex, many thanks for this. Would you be able to share the 'next page' referenced in the diagram please? I am interested in what it says about 'Improved take-off'.

[apnicolle]

Originally Posted by techwatcher

Hi Haldex, many thanks for this. Would you be able to share the 'next page' referenced in the diagram please? I am interested in what it says about 'Improved take-off'.

It says that if you choose VTOL on the Drive Mode Select switch you can replicate a Harrier Jump Jet.
I wish....

[Haldex]

Originally Posted by techwatcher

Hi Haldex, many thanks for this. Would you be able to share the 'next page' referenced in the diagram please? I am interested in what it says about 'Improved take-off'.

Here it is, but it’s just a volvo press release, you won’t find instructions on how to unleash some hidden mild hybrid powers

https://www.sveafordon.com/media/510...on18w09_re.pdf

[Chrismccann]

Originally Posted by Haldex

No, turbo is unassisted on B engines - unlike the PowerPulse engines, where compressed air assists the turbo spoolup.

Electric motor is actually a starter-generator, which just assists the ICE on startup and takeoff and acts as a generator for recuperation.

Is this why there is no polestar option as you’re basically getting a 10bhp boost anyway via the electric motor?

I suppose in summary I’m just surprised at how laggy it feels for a car with a theoretical 0-60/62 in 7.1/7.6 secs stat. It’s not going to be a problem much though. Oddly on my initial test (limited miles in it) on the motorway at 65mph in pilot assist mode it only averaged 35mpg whilst the Touareg with its 3l v6 would have gotten 40mpg over a 20 mile out and then back again drive.

[Vinesh]

Originally Posted by Chrismccann

Is this why there is no polestar option as you’re basically getting a 10bhp boost anyway via the electric motor?

I suppose in summary I’m just surprised at how laggy it feels for a car with a theoretical 0-60/62 in 7.1/7.6 secs stat. It’s not going to be a problem much though. Oddly on my initial test (limited miles in it) on the motorway at 65mph in pilot assist mode it only averaged 35mpg whilst the Touareg with its 3l v6 would have gotten 40mpg over a 20 mile out and then back again drive.

Chris - Have you looked at how many miles you are getting on a tank - ignore the comparative read outs in the car for a moment.... i have a B5D XC60 and used to have an A6 2L Diesel. Roughly, i am getting the same number of miles from the same amount of fuel - accounting for different sized fuel tanks. However the readouts in the cars are very different - on a long run in the XC60 the car reads 37-39mpg-ish and in the Audi it would show 43-45mpg for the same journey - i cant explain it, I'm not sure which is right or wrong.

[naveedy]

Its a great car and I think you can get a good amount of oomph given its size

I travelled recently on a long journey averages around 34-36 mpg

Really is comfortable.

So far my 2020 Momentum superb no probs

[Clan]

Originally Posted by nu11eaf

Take any car manufacturers figures with a pinch of salt, like the MPG figures, the 0 - 60 times will be at optomized performance levels and not what you are likely to get in real world use.

Manufacturers are not allowed to quote fuel consumption figures, the figures you see are Government figures, the purpose is only to compare one make and model against another as they all do exactly the same Government computer controlled road test.
Things causing variables would be, hills, road surface ,different drivers, ambient temperature and weather conditions, Tyre pressures, air pressure on the day, and how much extra weight the car has on board. all these factors can raise or lower fuel consumption and if one day you get them all negative and the next day they are all positive it can make the difference .

Volvo quote Performance figures? I thought they left that to the magazines... ?