Hi all

Apologies if answered elsewhere. Will the new stop/start technology on the Octavia 3 help protect the DPF when the engine is switched off at standstill as no soot is being generated whilst the engine is not running?

Do you think that we will suffer from less DPF regenerations as a result thereby negating the major drawback of buying diesel, especially for town driving? I returned to petrol with my present Octavia for this very reason but would like to return to diesel for the economy as I'm being crippled by the fuel bills.

Cheers

Jonno

I personally would not let it worry you providing you plan to buy a common rail car; they do not suffer the DPF issues the PD injected vehicles did. VAG i think learned alot of lessons from this and the system on their CR engined cars works great; apart from the fans coming on and the idle speed changing occasionally you'd never know it had one.

To reassure you I did 50k hard miles in a MK6 Golf over 3 years (not what i consider v high mileage over that period of time - much of this consisted of a 20 mile round trip to work) and it never once did a forced regen and i interupted lots or passive ones. Never gave me a ounce of bother

Dpf just need a clean out once in a while

Redline a warm car through the gears once a month I have done over 100k miles in bmw,audi,VW all fitted with dpf never had any probs

If you drive slowly all the time and never rev the car they slowly soot up ,not good and very expensive if warranty doesn't cover it

Most dpf warning lights also seem to be false alarms due to faulty egr sensors. Mine packed up after about 68k on the Berb. Its now on 88k and no actual probs with the dpf but it does get regular runs on the motorway, but also a fair bit in rush hour queues.

Hi Jonno, what are your typical journeys like/ how long are they?

I have a March 2010 vRS CR DSG, only done 16,000 miles (I work from home), apart from a trip to the alps each summer and the odd trip to the lakes (110 miles each way), it's a shopping car and my wife drives it more than me (carefully)! Never had any issues with DPF.

Edited 22 May, 201313 yr by Dodgy

Hi Jonno, what are your typical journeys like/ how long are they?

Hi littleade

5 days a week it's 10 miles each way to work through built up areas through stop start traffic made more unbearable by tram works between Beeston and Nottingham

Weekends it's normally A roads between 12 and 25 miles each way. Then twice a year long journey to the South coast approx. 180 miles then driving around on holiday.

So far done 10,000 miles since last July when car was bought new. According to Fuelly.com I'm averaging 33.0 mpg

Cheers

Jonno

Hmmm, 33mpg can't be much fun. TBH I'm not sure how the mkIII will react in your situation and if stop start will make a difference, so I'm going to cop out and suggest you have a serious chat with your dealer. Another option to consider would be the 1.4TSI as it's now got 140ps and in a lighter car goes like stink.... apparently.... at a fair few p per litre less that might be an option worth considering as it'll bridge the gap between your 1.8 and a diesel.

I've had no probs with my CR, it did a passive regen on Monday (I drove to Milton keynes and the fans came on when I stopped as I'd not noticed and interupted the cycle) It sorted itself out on the way home and it's only the 2nd one I'm aware of- I interupted the first 1 too. I don't commute as I work from home, but do short jouuneys each week to play golf (about 4 miles each way) mixed in with longer journeys, but none of it is what you would call continuous low speed stop start stuff.

Cheers

Ade

I have an audi diesel, which has start stop and energy recoup etc. It rarely turns off in the morning until about 20 minutes after start up because it takes so long to get warm enough. So you may find it doesn't work very well in your situation.

I have an audi diesel, which has start stop and energy recoup etc. It rarely turns off in the morning until about 20 minutes after start up because it takes so long to get warm enough. So you may find it doesn't work very well in your situation.

It's very ambient temperature dependent too - I was surprised when my Audi turned itself off after only about 2 minutes of driving the other day. Much better in this warmer weather.

Dpf just need a clean out once in a while

Redline a warm car through the gears once a month I have done over 100k miles in bmw,audi,VW all fitted with dpf never had any probs

If you drive slowly all the time and never rev the car they slowly soot up ,not good and very expensive if warranty doesn't cover it

High rpm was only needed on PD engines as they couldn't retard the timing as far as CR to do a forced re-gen. My PD has no problems, I don't run it at high rpm but it sees high enough load (which produces hot enough exhaust) to keep it clear without intervention.

Diesel engines don't produce soot at idle. They only produce soot at high load. Stop/start isn't a concern.

Hmmm, 33mpg can't be much fun. TBH I'm not sure how the mkIII will react in your situation and if stop start will make a difference, so I'm going to cop out and suggest you have a serious chat with your dealer. Another option to consider would be the 1.4TSI as it's now got 140ps and in a lighter car goes like stink.... apparently.... at a fair few p per litre less that might be an option worth considering as it'll bridge the gap between your 1.8 and a diesel.

I've had no probs with my CR, it did a passive regen on Monday (I drove to Milton keynes and the fans came on when I stopped as I'd not noticed and interupted the cycle) It sorted itself out on the way home and it's only the 2nd one I'm aware of- I interupted the first 1 too. I don't commute as I work from home, but do short jouuneys each week to play golf (about 4 miles each way) mixed in with longer journeys, but none of it is what you would call continuous low speed stop start stuff.

Cheers

Ade

33mpg from a 1.8TSi with such short journeys is not doing too bad. SWMBOs 1.8 TSi seems to average low 30s and she only does mainly short journeys, about 6K per year but if I nick it for a run to work (75 mile round trip) it averages low 40s for me. I think bearing in mind the £2K saving for the 1.4TSi compared to the 2.0TDi (with similar performance) anyone travelling less than 10,000 miles per year would prob take far too long to recoup via fuel savings and as noted above, you will avoid the DPF issues with the TSi, much quieter too, and will be more fun if you like hitting the red line occasionally! Unfortunately for me, I do too many miles to ditch the devil's fuel!