V60 D2 high fuel consumption

[wiktor2000]

Hi, my V60 2014 shows average consumption in town at 36-38 mpg which I can see is pretty high. I drive very economically rarely exceeding 40 mph. Could I have some advice how to improve it? Thank you.

[Zebster]

It's about what I'd expect from my D4 around town. All that accelerating and braking takes its toll.

[matt-oswin]

my D2 is the same. But taking mileage and filling tank to top proves mines getting 46 - 50 around town without using it as a track car!
incidentally my shown average speed don't ever change it always reads 18mph too

[blacoov]

I think this is pretty good. I have V60 D5 auto and around town (moderate traffic) it drinks about 9l/100km thats low 30s mpg. If crawling in start stop traffic consumption gets even worse and trip computer shows 10.5-11l/100km thats mid 20s mpg.

I have also noticed recently that my momentary consumption was abnormally high 1.8-2l/h and normally its 0.7-0.9l/h. This lasted whole journey around 30miles (1h) and even though I put my foot down a couple of times going stupid fast I eneded up burning crazy amount of fuel. The bar graph showed an average over 60km 10.5l (26-27mpg).

Could this be something about DPF regen? I could hear an unknown subtle noise (similar to a working hoover). I must note that on the way back it all went back to normal. Consumption was good. Same route, low traffic and car consumed 5.5l/100km (stead drive, not much traffic with cursing speed around 75mph) Consumption when stationary 0.8l/h

You should have a look at your car if it does it too. This could explain unusually high consumption. Unless there is something wrong with the car and I am not aware of this

Has anybody else noticed similar thing driving your diesel cars?

[Zebster]

Can't say I notice any change in my car's behaviour during an active DPF regen, not even the mpg falling (although logically more fuel must be being consumed). However I can infer when an active regen is in progress from the stop/start becoming inactive due to an 'engine system' issue that lasts just over 20 minutes when cruising on motorways.

I can easily confirm how many miles ago my car last performed a DPF regen using the 'Car Scanner' app (and the current soot and ash loading). The app would also tell me when an active regen was actually in progress, but I don't like to drive around with the ELM327 adaptor plugged into the diagnostic port as it sometimes screws with the dashboard display.

[blacoov]

Originally Posted by Zebster

Can't say I notice any change in my car's behaviour during an active DPF regen, not even the mpg falling (although logically more fuel must be being consumed). However I can infer when an active regen is in progress from the stop/start becoming inactive due to an 'engine system' issue that lasts just over 20 minutes when cruising on motorways.

I can easily confirm how many miles ago my car last performed a DPF regen using the 'Car Scanner' app (and the current soot and ash loading). The app would also tell me when an active regen was actually in progress, but I don't like to drive around with the ELM327 adaptor plugged into the diagnostic port as it sometimes screws with the dashboard display.

I think it was the dpf but I've got no access to diagnostic device to confirm it. I was just shocked how much it increased fuel consumption it seemed to last fairly long as the journey lasted around an hour. I have noticed on the M3 when I sat on 75mph on cruise control that momentary consumption is 8.5-8.7l/100km ( mid 30s mpg) Pretty high for an empty car, isnt it? Similar situation after a couple of hours and obviously an engine restart indicated consumption 5.9-6.2l/100km. Strange.

[Zebster]

Originally Posted by blacoov

I think it was the dpf but I've got no access to diagnostic device to confirm it. I was just shocked how much it increased fuel consumption it seemed to last fairly long as the journey lasted around an hour. I have noticed on the M3 when I sat on 75mph on cruise control that momentary consumption is 8.5-8.7l/100km ( mid 30s mpg) Pretty high for an empty car, isnt it? Similar situation after a couple of hours and obviously an engine restart indicated consumption 5.9-6.2l/100km. Strange.

ELM327 interfaces are very, very cheap (mine was £2.60) and the Car Scanner app was free (at least for Android). You should get something like this!