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Official XC90 D5 acceleration figures far from reality

6.5K views 11 replies 8 participants last post by  volvokhaled  
#1 ·
Finnish car magazine tested main big diesel SUV's (XC90, Q7, RR Sport, VW Toureg and X5) in the market. Among other test they compared acceleration 0-100kph reality vs official figures. And worse outcome by far had XC90 which was 1,5 seconds slower to 100kph then figures stated by Volvo - 9,3 seconds vs 7,8 seconds. For example BMW X5 had a difference only of 0,1
I thought that this can not be true that Volvo could be cheating. So I decided to investigate it myself as well. Made tests with automatic measuring and OBD reading equipment. Got exactly same figures trough several runs as the car magazine tests - 9,3 seconds from 0-100kph. Interestingly choosing sport mode didn't make an big difference.
Simply said it made me angry as I had tough times choosing between Q7 and XC90. XC90 had better looks but worse engine and suspension then Q7. But as on paper the engine performance figures where not so different I went with XC90.
I asked Volvo Dealer comment regarding the findings. Also asked if there will be retrofix with PowerPulse or Polestar. Got an answer that it will get better if I have 20000km odo. But I will first service of 20000km next week:mad:

Would for somebody be possible to measure the 0-100kph figures as well to confirm or object the findings?
If it would be true I would not let Volvo to get just away with it as paid 100% of the invoice not 20% less as acceleration figures seem to be
 
#2 ·
All these numbers are a kind of idealistic fiction - fuel consumption is almost double in reality than stated in official Volvo papers (5,4 l/100 km vs. the real almost 9-10 l/100km within very mild driving) and the acceleration is slower than stated. These numbers are probably measured in some laboratory conditions ?
 
#3 ·
Here you can watch some examples for 0-100 km/h

8.5s
8.2s
8.5s
8.9s

all four examples starts acceleration without launch control.

Here you can watch two examples using launch control.

7.7s
cca 7.7

So in real world XC90 can accelerate in 8.0 - 8.5 second, 9.3 is unrealistic time.
 
#5 ·
I really don't think it has launch control, but I could be wrong. You could do the equivalent by dropping into drive from neutral at 3500 RPM. I'm not even sure it would let you do that though. Either way 7.7 looks legit if you use some form of clutch dropping.

The other examples were just stepping on the accelerator from a stop.
 
#6 · (Edited)
What if you held the brake, put it in drive, then rev'd to 3000rpm and then let off the brake? I wouldn't worry about it too much. Diesels are typically slower than gassers 0 - 100kph but have much more usable torque for typical driving. How often do you need to go from stop to 100kph as quickly as possible? Not as often as you need to pass someone at let's say 60kph I bet. Besides, diesels are more easily tunable than gassers and you can get a lot more power out of them with a tune. Something you can look forward to.
 
#7 ·
What if you held the brake, put it in drive, then rev'd to 3000rpm and then let off the brake? I wouldn't worry about it too much.
It will not have an effect. Unlike an airliner... ;)
 
#8 ·
Most youtube accelaration figures are given by just having a cam in a dash. This is not the correct way. Should be done by GPS and OBD2 automatic data reading and calibration. Allready the displayd kph figure would be off by 4kph.
I was just suprised that I got the figures exactly the same as the Car Magazine.
 
#9 ·
I've driven the XC90 D5 a few times, regarding the fuel consumption. You can in reality get it as low as the official number by driving in ECO/COMFORT at 80-100 kph in average. But if you press the engine you'll end up by consuming around 8-9, it's still a 4 cylinder in a big car. You consume as you drive :)

Regarding the 0-100 time, there are a lot of factors that affect. But for me personally these times aren't important since it's a family car, and no racer. But I would hardly say that the D5 is a slouch, it can be quite fast and responsive.