[adi58]

Since the BMW X1 which sells with B47 Diesel engine currently already has a DPF, does that mean it’s compliant with BS6 fuel?

[ramzsys]

A very clean burning diesel designed for BS6 emissions would clog the DPF less than one which is "upgraded" to meet the new norms.

We can make an informed decision only if some technical person is able to tell us whether BS6 engine is going to come with newer gen injectors capable of handling ULSD or its the same ones used in current era.

If it's the latter, then better to buy it now.

[PearlJam]

Everyone is talking about BS4 diesels vs BS6 diesels.

But, I think we also need to answer the question about BS4 petrols vs BS6 petrols (the OP mentioned Brezza, but the title of the topic is fuel agnostic).

For models that have a direct BS6 replacement (like Swift VXi, Honda City iVTec, etc), I believe the prices of BS4 variants will tank heavily, because there is no advantage in owning a BS4:

1. Petrols engines are much less sensitive between BS4 and BS6 fuels, from what I read. So, a BS6 engine is expected to run with both fuel types without any problem, albeit with lesser efficiency
2. Power/torque figures are mostly on par, for those models that now have BS6 engines already available

For models that are planning a downgrade (like Polo GT Tsi or Vento 1.2 to 1.0), the current 4 cylinder 1.2 will no doubt command a premium.

[AMG Power]

BS4 cars will mostly see an increase in resale value compared to the current resale prices or in the worst case, remain stable.

The reasons for this are many and include additional costs, maintenance headaches, more potential downtime, more troublesome, more avenues for adulteration etc as described below:

Lower sulphur lubricant leading to trouble with BS4 cars: Let's get this out of the way as it appears to be the most misunderstood part - the lower sulphur content will not affect most of the European cars (who have been having injector issues) - VW, Skoda, Renault, BMW, Audi, Mercedes. Most of the current crop of European cars have been designed, built and tested and launched after Sept 2009 which was the launch date for Euro 5. Euro 5 has 10 ppm of Sulphur which is the same as BS6 sulphur levels. The major reduction in sulphur was from Euro 4 to Euro 5 but remains the same between Euro 5 and Euro 6. In India however the reduction has taken place during the shift from BS4 to BS6.

The injectors of most of the European cars will not be adversely affected specifically by the reduction in sulphur as they have been designed with 10ppm. The injectors of the European cars have the same part number for the EU models and Indian one's confirming that it has been built for Euro 5 at the minimum. India on the other hand will have major reduction in sulphur from 50ppm in BS4 to 10 ppm in BS6 and these may affect the models designed and built for BS4 fuel. Honda and Hyundai have reliable injectors so these cars should not also be affected. Ford has recently switched its injector supplier to Bosch from Continental so they should also be stable.

Additionally with the reduction in Sulphur, the petroleum companies would be adding lubricant additives to make up for the lack of lubricity because of reduction in sulphur. (However this in itself may not be a good thing because additives are not advisable for some cars.)

Higher fuel costs: BS 6 cars will naturally be less fuel efficient than their BS4 counterparts because they will have increased back pressure. And as the DPF particulates build up FE would reduce further. In addition there is a need to regularly fill up Adblue along with diesel at certain intervals. This would increase fuel costs.

Higher maintenance costs: The DPF would have to be cleaned at regular intervals and this could be expensive. Also if the DPF gets clogged it would be quite expensive to repair. There would also be a need to replace the DPF - indicating higher maintenance costs.

More routine headaches: The need to fill up Adblue at regular intervals brings with it another headache - availability, adulteration, need to keep a check on levels etc. All this does not exist with BS4 cars.

Less Powerful engines: Most manufacturers are discontinuing powerful diesels and having only weak petrols. These include VW, Skoda, Audi, Renault and even Maruti. Those looking for power combined with FE at lower prices will not find a good choice with BS6.

Given all of the above those looking for pre owned cars should gravitate towards BS4 cars than a BS6 cars increasing their resale value.

[H Karter]

Originally Posted by iamahunter

This is very true. I sold my swift vdi 2011 and experienced this firsthand. Though the engine was very well maintained, the rusting had begun on doors, boot and bonnet. The car also had some traffic scars and a cracked windshield. Despite this my swift fetched a value of 2L.

Mine is similar story with second generation Feb '12 Swift VDi. Within two days of posting on OLX buyers lined up in a single day and to my amazement one of them bought it in a day later for an astonishing 3.9lakhs.
Swift 1.25 diesel is killer combination and mind you it must be "white" at any given time; buy or resale.
A little OT, when I booked one I was told - book only SWIFT VDI WHITE or wait for ages for delivery.

Besides the ever decreasing weight bandwagon of recent vehicles has got another reason in form of BSVI, that is, to match the same power to weight ratio with depleted performance engines.

All in all the Used car buyers will buy BSIV
some for the performance,
some for the combination of engines and body styles,
some for avoiding the hassle of maintaining SCR and DPF in case of Diesels and
some for just the heft/weight of older vehicles.

[YagyaSharma]

Hi All

This is my first post. So apologies for any errors/mistakes. This particular thread caught my eye while planning to sell my 2014 Mahindra Thar. I have gone through all the responses but could not find an answer to my query. I understand that BS4 diesels may fetch better resale prices considering the dearth of new BS6 diesel engines from manufacturers. However, will this be the right time to sell my Thar as well because, Thar will be revamped soon and will be launched with a new diesel mill? Or the experts would suggest to hold on to it for a few more months?
P.S: My Thar is also listed in the classifieds in case any one is interested.
Thank You

[Drkalgaonkar]

All the above "technical" points affect the resale value of the vehicles.

But one thing trumps all of them and that is buyer's need, what his/her crazy heart wants.

Nobody knows what may actually happen after the deadline. To sale or not to sale or also to buy or not a marginally discounted BS4 vehicles / in fire sale.

I shall wait whether I am a buyer or a seller.

[drkuldeep1998]

I personally feel that small cars with BS4 diesel engines will see good resale value post April 2020. Most of the manufactures are not planning to upgrade their diesel engines to BS6 for small cars. However, in reallity small diesel cars are really in demand in India. Especially in rural area, people still opt for cars like swift, dezire, vista etc. Hence I feel that small diesel cars will see good days in resale market post April 2020

[self_driven]

Originally Posted by YagyaSharma

hold on to it for a few more months?

Definitely hold on to it. The revamped Thar will be way more expensive than the outgoing version. Chances are that you'll get a better price for your car when the new Thar is launched because passionate folks who find the new Thar expensive (or too car-like) will have no option but to take the pre-owned route.

[YagyaSharma]

Thanks self_driven. Makes sense to hold on then unless I get a good price before the new thar is launched.