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Follow up - Best I've got so far is 75mpg (and even that figure was going up but I'd reached my journeys end!) and that's with an engine with less than 900 miles on so should get (even) better are the miles go on. MPG can be a bit erratic I've notice averaging from the low 50's upwards despite a consistent driving style over the same journey. Foot down I've seen single figures but it can shift and that turbo rush is a bit addictive.Can anyone give and indication of fuel consumption for this model? I'm still running mine in and averaging about 52mpg at present (on a no doubt tight engine) but when I first picked up the car it was doing 62mpg on a motorway (55-60mph) run. The mpg seems to be getting worse(!) yet I'm not a heavy footed driver - what's going on?!![]()
Got a honeycomb accessory trim to fit behind the front (badge) grill - can any one please advise as to how to remove this grill - it seems pretty well fixed in and I'm reluctant to apply too much force in the wrong direction to try and remove it, with the prospect of snapping the grill or worse(!) Any guidance would be gratefully received please.![]()
It is indeed the constant regeneration cuased by frequent start/stop town driving.
The regenration works by injected extra fuel into the engine on the exhaust stroke (in addition to that injected during the ignition stroke). This extra fuel is supposed to vaporise and be exhausted, throught the DPF which contains a catalyst which, with the fuel vapour, burns off the soot particles in the DPF keeping it clean.
Unfortunately, not all the fuel vaporises, especially when the engine isn't fully warmed up, this un vaporised fuel remains in the cylinder, and drains down into the oil sump as the oil which lubricates the cylinder does.
thus, diluting the oil, obviously, the more the car regenerates, the more dilute the oil becomes.
the only solution is to either get a non-dpf car, or change your oil more frequently.
Mine's fairly bad for needing regen's, again, i do mainly cross town commutes of about 5 miles in start stop traffic, I always wondered why my oil level never went down despite other people reporting there new car was drinking oil like it was going out of fashion til I found the above out.
Re-reading, mine's no where near as bad as yours though. From a purely speculative PoV maybe your car needs some kind of ECU update to adjust the regen fueling characteristics/parameters so it doesn't kick in so frequently, though this would probably need to be done by SEAT HQ themselves.
Realistically, i think you should change the car for a petrol version as the ecomotive diesel obviosuly isn't right for the kind of use you require form it.
Why the hell are manufacturers putting DPF's in supermini's which will spend most of their lives driving round town, to the shops and back?