Bad Times Ahead For Diesel car Owners ???

[nellz_bassettshonda]

I keep hearing a lot of rumours about bad times ahead for diesel owners hence the reason manufacturers are banging them out now ?

Any ideas ? I have heard this for a while and then HONDA anounced they will be stopping with the i-CTDI... Also I read the chief man at Merc has said with future regulations diesel engines will come at a premium of up to 4k over petrol models. I am at a loss but would like to find out if there is any truth in what I am hearing

[coste1l]

the icdti cant make the new euro ****zle emissions without dpf and dpf is the worst idea since banning smoking in pubs

[robbo51]

My dpf works fine and there is no smoke whatsoever!!
Dont be misled into thinking that its a bad thing.

[RickHondaR]

Originally Posted by robbo51

My dpf works fine and there is no smoke whatsoever!!
Dont be misled into thinking that its a bad thing.

yes they work fine but they come at a cost to your MPG

[murray]

Sorry not with diesel tech. DPF?? Well im guessing it reduces the MPG. How much does this change the current mpg.

[robbo51]

Pass.....I get 40 mpg Urban...so not much

[Unknownsoldier]

When some diesels get 75-90mpg....... 40 is at the low end, even my old escort van gets that...., damned cheap skoda's (considering it's a VW....).

TBH, diesels are hideously polluting compared to petrol, seeing as they don't register solid particulate in emissions tests.... oh and BTW, it will chuck out black smoke, but the difference with DPF is that it generally only happens once or twice rather than everytime you drop a gear as with a normal diesel....

Tom

[robbo51]

Originally Posted by Unknownsoldier

When some diesels get 75-90mpg....... 40 is at the low end, even my old escort van gets that...., damned cheap skoda's (considering it's a VW....).

TBH, diesels are hideously polluting compared to petrol, seeing as they don't register solid particulate in emissions tests.... oh and BTW, it will chuck out black smoke, but the difference with DPF is that it generally only happens once or twice rather than everytime you drop a gear as with a normal diesel....

Tom

It does smoke, as you say, but only when regenerating.
Ive never seen any, even at night with a following car

[Unknownsoldier]

It depends on driving style etc. does n't it as it catches the solid particulates then discharges them when regenerating...... so instead of polluting every time you accelerate it just does it in one big lump. It only works when the engine is under heavy load so likely only at high enough speed then the smoke wouldn't be seen....

Tom

[rochesb]

DPF is fine as long as you are doing enough driving to give the regeneration process a chance. Regeneration needs a sustained period of high exhaust temperature, so stop start motoring in traffic is bad news. Repeated failure to regenerate can lead to expensive bills as dealer regeneration seems to mandate an oil and filter change afterwards & with modern diesel units using semi-synthetic or full synthetic oils the costs mount up.

I sold a 1 year old Nissan X-Trail because of continual problems with regeneration failure. I drove 15 miles each way to work, including 10 miles of dual carriage-way. This was not enough to keep the DPF filter clear, especially in bad weather or with road congestion. I was late to work several times in the space of a couple of months as I drove up & down the dual carriageway near work waiting for the filter warning to clear, typically wasting 2-3 litres of diesel each time in the process. In my experience DPF equipped cars are not suitable for urban environments, making Nissans Quashqai 'urbanproof' adverts a joke.

Try using Google & search for almost any brand of car & DPF problems........

As for economy, regeneration consumes fuel and does impact fuel economy, something the manufacturers fail to point out & something I suspect that is not included in the published economy data for cars.

I drive a 2.0 petrol Accord now, no turbos, no DPF, no DMF.....

[nellz_bassettshonda]

As for the DPF's I read on Honest Johns forum that Hyundia are having several complaints about the new IX35 diesels. The economoy quoted is 47MPG combined but most peeps are only getting 35 tops as the DPF is casuing the economy to drop severley.

[Unknownsoldier]

It is, which is part of my comment on VW's new diesels 75-90mpg, no DPF's.......... DPF's are as bad an idea as CAT's, both are just shortcut measures, to meet demands, it is not actually a proper solution.

Tom

[dayjob174]

I predict a big demand for secondhand non DPF diesels, unless there are tax changes as well.

[Unknownsoldier]

Originally Posted by dayjob174

I predict a big demand for secondhand non DPF diesels, unless there are tax changes as well.

Yep, I'm guessing only wallies will buy DPF's once the problems go public on the majority of models, unless you do 50 miles a day, each way, on the motorway, you'll have problems.....

Tom

[RickHondaR]

Originally Posted by nellz_bassettshonda

As for the DPF's I read on Honest Johns forum that Hyundia are having several complaints about the new IX35 diesels. The economoy quoted is 47MPG combined but most peeps are only getting 35 tops as the DPF is casuing the economy to drop severley.

Originally Posted by Unknownsoldier

Yep, I'm guessing only wallies will buy DPF's once the problems go public on the majority of models, unless you do 50 miles a day, each way, on the motorway, you'll have problems.....

Tom

The Toyota DPF seems fine apart from having to clean the EGR valve every 10-15k but it does hit the MPG as quoted above and in my experience the mpg is the only real problem.

[rochesb]

AA comments about DPFs

Diesel Particulate Filters (DPF) : Diesel particulate filters - The AA

Some manufacturers are now including (in small print) advice about buying a DPF equipped car if it is to be used for urban motoring.

[cb550]

Originally Posted by Unknownsoldier

Yep, I'm guessing only wallies will buy DPF's once the problems go public on the majority of models, unless you do 50 miles a day, each way, on the motorway, you'll have problems.....

Tom

For me,they're not worth the potential/inevitable hassle.The CDTI I've owned for the last 3 years has been great,and that's with a majority of 6 mile journeys.Apart from maybe a 1.3,would expect issues from,say a 1.9 dpf'd

[john87]

My next car will probably not be a diesel for this reason. I'm very impressed with my i-CTDI's lack of black smoke compared to Ford and vauxhall commonrails which I often see puffing out big lumps of black smoke when changing down.