MOT emissions on a decat downpiped 35i

[willgill]

Don't think you are right, the only change was related to DPF equipped cars and visible smoke from the exhausts.

Diesels came off worse, CO2 emissions for petrol cars weren't changed (at 0.2%)

 

[R.E92]

If that's the case how come the new 2018 emission regs for diesels are being applied retrospectively??
Remember this, the agenda now is to remove fossil fuelled vehicles from our roads over the next thirty to forty years, if you think they will not apply retrospectively (had to spellcheck that!) to petrol but will to diesel you are in fantasy land my friend.

In addition any small changes would not affect unmodified cars, only decatted cars running on the edge of the emission limits would be brought into line.

They aren't changing the reg for emissions for older cars. If you follow the link in Pbondar's post and read the new MOT guidelines you see that they have just added additional checks for vehicles related to tampering as a way of keeping obviously modified boy racers off the road by taking action on dodgy after-market exhaust setups and eBay HID kits and nothing to do with forcing fossil fuel vehicles off the road.

The MOT regs even have a nice flow chart which you can follow which details the different limits depending on the cars age. If they bring in stricter emissions limits then they will only apply to cars produced after that date. Maybe China or India would make that kind of move, but the UK has a solid history of respecting pre-existing tech. As seen in the MOT exemption on classic cars.

The way government gets rid of old fossil fuel cars is easy. They incentivise electric cars to the point that new buyers decide an electric car makes sense, the old fossil fuel cars naturally depreciate over time until they become uneconomical to repair. In 20 years nobody will want to own a fossil fuel car other than enthusiasts.

 

[mcbutler]

So, as I read the MOT regs "ANY diesel vehicle producing visible smoke has a major fault". It does not say "any vehicle made after 2017 making visible smoke has a major fault".
It has already been announced that the UK plans ban sale of fossil fuelled vehicles 2040, that's not incentivising, thats banning.
It is patently obvious that this is going to get tighter and tighter as a pre cursor to this date and older cars will be targeted first, simply because they are the major polluters. Hence the ridiculous old diesel scrappage schemes.
Anyhow, time will tell...

 

[R.E92]

So, as I read the MOT regs "ANY diesel vehicle producing visible smoke has a major fault". It does not say "any vehicle made after 2017 making visible smoke has a major fault".
It has already been announced that the UK plans ban sale of fossil fuelled vehicles 2040, that's not incentivising, thats banning.
It is patently obvious that this is going to get tighter and tighter as a pre cursor to this date and older cars will be targeted first, simply because they are the major polluters. Hence the ridiculous old diesel scrappage schemes.
Anyhow, time will tell...

That is just to catch people with Euro5 and Euro6 diesels that have removed their DPF. Any car producing visible smoke is buggered and shouldn't be on the road in my opinion.

My 14yr old 320d winter car produces no smoke and it's had the EGR disabled and swirl flaps removed. It's just about looking after your vehicle.
The purpose of the MOT is to remove poorly maintained sheds from the road.
By 2040 nobody will want to buy fossil fuelled cars anyway so the major manufacturers will have stopped making them, probably struggle to find a petrol station by then.

 

[stijohnny]

Impressed you passed, how did you get around the readiness check? I had to fit a BMS fix to get it to show as ready.
I still failed miserably on emissions though!

I didnt do anything else to the car, it was remapped when the Cats were removed. I just dropped it off at the MOT station and picked it up later that day...
I'll put on the MOT emissions (pass or fail), this year too, it'll be the first week in August and I still have the old (catted) downpipes in the garage, just in case!

 

[mcbutler]

So, as I read the MOT regs "ANY diesel vehicle producing visible smoke has a major fault". It does not say "any vehicle made after 2017 making visible smoke has a major fault".
It has already been announced that the UK plans ban sale of fossil fuelled vehicles 2040, that's not incentivising, thats banning.
It is patently obvious that this is going to get tighter and tighter as a pre cursor to this date and older cars will be targeted first, simply because they are the major polluters. Hence the ridiculous old diesel scrappage schemes.
Anyhow, time will tell...

That is just to catch people with Euro5 and Euro6 diesels that have removed their DPF. Any car producing visible smoke is buggered and shouldn't be on the road in my opinion.

My 14yr old 320d winter car produces no smoke and it's had the EGR disabled and swirl flaps removed. It's just about looking after your vehicle.
The purpose of the MOT is to remove poorly maintained sheds from the road.
By 2040 nobody will want to buy fossil fuelled cars anyway so the major manufacturers will have stopped making them, probably struggle to find a petrol station by then.

Currently having a new gearbox fitted in my Zee, popped over to check on progress. Place is an MOT station and they agree that this is just the beginning and is certainly backdated. They anticipate similar restrictions being introduced for petrol shortly. I said "it seems a bit harsh" to which the instant reply was "its because they want anything that's not electric off the road as soon as possible". We also discussed an engine that (I think he said BMW were developing) that was 250cc, triple turbo and over 250BHP!!! Great tech but why would you want a high performance gas car that's only half as fast as an electric car 0-60!!?? My brother drives a Tesla as his company car, its insanely fast and gets over 350 miles to a charge...................

 

[stijohnny]

I had my 35i fitted with decat downpipes a couple of months back when it was remapped and today it had the MOT!
Slightly nervous when the phone rang, it was the test center to say that the car had passed with no advisories.
So here are last years emissions (fully catted) compared to this years (decat downpipes).

2016
Fast idle - CO 0.02(limit 0.2), HC 6(limit 200), Lambda 1.0(limit 1.05)
Natural idle - CO 0.01 (limit 0.3)

2017
Fast idle - CO 0.026, HC 39, Lambda 0.996
Natural idle - CO 0.155

2018 (passed again with flying colours)
Fast idle - CO 0.064, HC 39, Lambda 1.001
Natural idle - CO 0.052