pauljdh
Members
Until 2 weeks back I had a 2.2 i-cdti manual tourer which was returning 52-56mpg (indicated) without even trying.
I changed it for a 2012 2.2i-dtec AUTO tourer and in the two tankfuls Ive got through Im very disappointed at the fuel economy.
To make it a reasoned statement:
I buy the same fuel from the same garage
My journeys are identical in all respects (length, traffic, duration, time of day etc)
Both cars have immaculate 100% Honda SH.
So the indicated (car computer) figures are 54mpg (i-cdti manual) vs 36mpg (idtec auto).
Known differences
Allowing for the automatic gearbox loss, even allowing 8mpg, which would be excessive, the later generation car is significantly poorer in fuel burn - surely not something Honda intended?
So Im thinking,
but - the 7th gen used to outperform Honda's and .govs official figures easily whilst the 8th gen massively underperforms both.
I know I need to do a tank to tank calc but everything indicates things are much worse. Tyres are good etc, brakes not binding and nothing reportable on the car
As soon as Im settled with the car I want another economy tune and a DPF off (currently its been fine) which may help.
If it doesn't match the official figures from Honda Ill be taking it back for a look see, although it was serviced 3K ago.
Anyone agree / disagree, any comments or ideas? Those from auto i-dtec owners especially welcomed!
Really didn't expect to be going backwards with a next gen car (even allowing for an auto).
So, apples and apples - 54mpg-8mpg (auto)-4mpg (stage 1) = 42mpg for my i-cdti and Im lucky to get 36 on an advanced design. Somethings amiss.
Cheers
Paul
I changed it for a 2012 2.2i-dtec AUTO tourer and in the two tankfuls Ive got through Im very disappointed at the fuel economy.
To make it a reasoned statement:
I buy the same fuel from the same garage
My journeys are identical in all respects (length, traffic, duration, time of day etc)
Both cars have immaculate 100% Honda SH.
So the indicated (car computer) figures are 54mpg (i-cdti manual) vs 36mpg (idtec auto).
Known differences
- manual vs auto
- DPF vs non-DPF
- i-cdti vs i-dtec
- i-cdti had a stage 1 tune from premier tuning. I claimed an extra 3-4 mpg after the map over
Allowing for the automatic gearbox loss, even allowing 8mpg, which would be excessive, the later generation car is significantly poorer in fuel burn - surely not something Honda intended?
So Im thinking,
- FAHADS tune was more powerful in terms of economy than I allowed
- The DPF is a big restriction and does nothing for fuel consumption (On Tues HH confirmed that my software is up to date and the filter is holding only 5g of soot)
- The auto gearbox is poor
- The 8th gen is a much heavier car
- The computer on an i-cdti is optimistic or the i-dtec is pessimistic
but - the 7th gen used to outperform Honda's and .govs official figures easily whilst the 8th gen massively underperforms both.
I know I need to do a tank to tank calc but everything indicates things are much worse. Tyres are good etc, brakes not binding and nothing reportable on the car
As soon as Im settled with the car I want another economy tune and a DPF off (currently its been fine) which may help.
If it doesn't match the official figures from Honda Ill be taking it back for a look see, although it was serviced 3K ago.
Anyone agree / disagree, any comments or ideas? Those from auto i-dtec owners especially welcomed!
Really didn't expect to be going backwards with a next gen car (even allowing for an auto).
So, apples and apples - 54mpg-8mpg (auto)-4mpg (stage 1) = 42mpg for my i-cdti and Im lucky to get 36 on an advanced design. Somethings amiss.
Cheers
Paul