BS7 Draft: April 2029 and Used BS6 Values

The BS7 draft has arrived, and with it the usual round of confident claims about what it does to the car in your driveway. Most of them are wrong. The Ministry of Road Transport and Highways has proposed, not notified, a set of Bharat Stage VII rules that would apply to new passenger cars manufactured from 1 April 2029, with later phases in 2031 and 2035. The draft is open for comment for 30 days. No BS7 vehicle exists, nothing in the draft touches a BS6 car already registered, and the date is two and a half years away. What the draft does change is how buyers will price a used car between now and then, and that is a question of two fields on the registration record: the emission norm and the month the car was built. This guide covers what was notified, what it does not do, the one precedent we have, and what buyers and sellers of BS6 cars, diesel ones in particular, should do about it.

What MoRTH Actually Put Out on 12 and 13 October

The ministry published draft notifications proposing amendments to the Central Motor Vehicles Rules, 1989, to introduce BS7. The passenger-car draft is dated 12 October 2026 and the commercial-vehicle drafts followed on 13 October, as reported by Business Today and UNI. Objections and suggestions are invited for 30 days from the date the drafts were made public. The rules take effect only when a final notification is issued after that process, and the dates below can still move.

The proposed timeline by vehicle category

The content is aligned with Europe's Euro 7 framework. For passenger cars the headline tailpipe limits for nitrogen oxides stay where BS6 left them, 60 mg/km for petrol and 80 mg/km for diesel, according to Autocar India. The change is in how compliance is proved and what else is counted. The particle-counting threshold drops from 23 nanometres to 10, so smaller particles are measured. From April 2030 the on-road real-driving test for passenger cars would run with a conformity factor of 1.0, removing the allowances BS6 gave for the gap between lab and road, as Autocar Professional reports. Brake-wear particle limits for cars are proposed from April 2031, with tyre-wear limits to be notified separately. On-board monitoring would track emissions and fuel or energy use in service, and an environmental vehicle passport would record them. For electric and plug-in hybrid cars the draft sets battery durability floors: at least 75% of original usable energy up to five years or 1 Lakh km, then at least 67% up to eight years or 1.6 Lakh km.

The industry was not expecting a 2029 date. At the SIAM annual convention on 3 September 2026, MoRTH Secretary V. Umashankar had said a draft would come within a couple of months and that timelines would be the main challenge; the draft has now superseded that remark. As reported by Business Standard, unnamed industry executives have called the timeline compressed, said a 2032 start would be preferable, and warned that compliance engineering could pull resources away from electric-vehicle programmes while combustion models still make up around 90% of most portfolios. That pushback may change the dates in the final notification. It will not change the direction.

What the Draft Does Not Do

Some earlier coverage, including on this site, ran well ahead of the facts and described BS7 as already in force. It is not, and it was not. Setting the record straight is worth a few plain sentences, because a buyer who believes BS7 is live will overpay for reassurance and a seller who believes it will panic-sell.

• No BS7 vehicle is on sale. The first BS7 passenger car cannot be built before 1 April 2029 under the draft, and the date may move later, not earlier.
• Nothing bans, re-tests or restricts a BS6 car. A BS6 car stays legal to own, drive, insure, transfer and re-register across states on exactly the terms it has today.
• The age limits you may have heard of are not BS7 rules. The Delhi-NCR position on diesel cars over ten years and petrol cars over fifteen comes from the National Green Tribunal's orders of 2014 and 2015, affirmed by the Supreme Court in 2018 and modified on 17 December 2025 so that coercive action applies to vehicles below BS-IV. Fitness and scrappage rules come from the Motor Vehicles Act and the Commission for Air Quality Management's directions. None of this is in the BS7 draft, and the draft does not change any of it. Our guide on how the NCR test moved from age to emission norm covers that position in detail.
• No price impact on used cars is written anywhere in the draft. Business Today notes the draft does not estimate the cost to manufacturers or the price effect on buyers. Any rupee figure you see attached to BS7 today is a guess.

The Only Precedent: BS4 to BS6 in 2020, and Why 2029 Is Different

India has done one hard emission transition in living memory, and it is the reason people fear this one. On 24 October 2018 the Supreme Court, in M.C. Mehta v. Union of India, ruled that no BS-IV compliant vehicle could be sold in India after 31 March 2020, refusing the manufacturers' request for a grace period. Dealers were left with stock they could not retail. On 27 March 2020, with the lockdown under way, the court allowed 10% of unsold BS4 stock to be sold for ten days after the lockdown ended, excluding Delhi-NCR, and later withdrew even that after finding the limit had been breached. New BS4 cars went from showroom to unsellable on a court-fixed date.

Note what that cliff was and was not. It was a sales and registration cut-off for new BS4 vehicles. It was never a ban on using, selling or transferring a BS4 car that was already registered. The used BS4 cars that lost value in the years after 2020 lost it through the normal routes: age, mileage, buyers preferring the newer standard, and in the NCR the ten-year diesel and fifteen-year petrol clocks, which predate BS6 entirely.

The Value Map: Where Each Used Car Sits

If the rules do nothing to existing cars, why talk about value at all? Because buyers do not read notifications; they read headlines, and asking prices follow sentiment. The second reason is structural and has nothing to do with BS7: diesel is shrinking. Diesel accounted for about 18% of passenger-vehicle registrations in FY2026, according to registration data reported by Autocar India, and that volume is concentrated in SUVs. A smaller pool of new diesel buyers today means a smaller pool of used diesel buyers in three to five years. Our note on what the falling diesel share is doing to resale lays out that arithmetic. Put the two together and the map looks like this.

Two things stand out. The car most exposed to sentiment is the BS6 diesel, and within that, the Phase 1 car built before April 2023. The car least exposed is a Phase 2 petrol or CNG, which is simply the current standard. And in every row, the deciding fields are the ones on the registration record rather than anything the seller says.

For Buyers: Read the Norm and the Manufacturing Month, Not the Advertisement

BS6 Phase 2 came into effect for vehicles manufactured from 1 April 2023 and added real-driving emission testing and OBD-II diagnostics to the approval. That makes "Phase 2" a selling point, and sellers use it loosely. The word "RDE" in an advertisement proves nothing. Two cars of the same model, both registered in 2023, can sit on different sides of that line, because the line is the manufacturing month, not the registration date. A car built in November 2022 and registered in February 2023, or even May 2023 after sitting in dealer stock, is a Phase 1 car.

1. Get the registration number and pull the record. The Vahan Verify RC check on VahanBazaar costs Rs. 99 and returns the VAHAN record for that number. Two lines matter here: the emission norms entry, and the manufacturing month and year.
2. Apply the April 2023 rule yourself. Manufacturing month before April 2023 means BS6 Phase 1, whatever the registration date or the advertisement says. April 2023 or later means Phase 2. Do not take the seller's word for which side of the line the car is on.
3. Match the price to the record. A Phase 1 diesel priced as a Phase 2 diesel is overpriced by whatever premium the market puts on the newer approval. Use the record to negotiate, not the brochure.
4. For a diesel, do the two date sums. How old will the car be in April 2029, and when does it reach ten years from registration? The second only bites in the NCR today, but it is the figure your future buyer will ask about. Our guide to buying an older diesel under the NCR and fitness rules covers the state-by-state picture.
5. Refuse any "BS7-ready" premium. No car on sale today is BS7-anything, because the standard does not exist in final form. A seller using the phrase is either confused or trying it on.

For Sellers: The Diesel BS6 Window Is 2027 to 2028

If you own a BS6 diesel, the draft does not force you to do anything. It does make the ordinary advice sharper. The three-to-five-year window is already where a car fetches the most favourable ratio of price to use. For a diesel car that window now ends in a year when buyers will be reading BS7 headlines daily. A 2023 or 2024 Phase 2 diesel reaches four to five years old in 2027-28. A 2021 or 2022 Phase 1 diesel is already past five, will be seven or eight in 2029, and in the NCR is closing on ten. The sensible plan is to sell inside that window rather than wait to see what the final notification says, because the final notification can only confirm a date or push it later, and neither outcome adds value to a used diesel.

The counter-argument is real and worth stating. Diesel SUVs hold value better than diesel hatchbacks because the people who buy a used Fortuner or a diesel Creta want the torque and the range and are not shopping on fuel type. That market will exist in 2029. It will be smaller, and the buyer in it will be better informed about norms than today's, which is why the listing that answers the norm question up front will win the enquiry.

Price honestly against the record. If the car is Phase 1, say so and price it as one; the buyer's Rs. 99 check will reveal it anyway, and a listing caught overstating its norm loses the sale and the trust. If it is Phase 2, the record proves it and you can hold your price.

Trucks, Pickups and Buses: Later Dates, Same Logic

Commercial-vehicle buyers have more time and a different calculation. Under the draft, N1 goods carriers up to 3.5 tonnes, the pickups and small delivery vans, move to BS7 from 1 April 2030, with further phases in April 2032 and April 2035. Buses and medium and heavy trucks in categories M2, M3, N2 and N3 follow from 1 April 2031, with additional requirements in April 2033 and April 2035. The commercial draft adds ammonia, methane and nitrous oxide to the pollutants counted and, as reported by UNI, contemplates compliance periods of up to fifteen years or 8.75 Lakh km for some heavy vehicles.

For a used BS6 truck or pickup the immediate effect is nil, and the resale question runs through the permit, the fitness certificate and the hypothecation entry long before it runs through the emission norm. What the 2030 and 2031 dates do is set the horizon for fleet owners deciding whether to buy a used BS6 unit now or wait: a BS6 pickup bought today will be four to five years old when the first BS7 pickups are built, which is a normal replacement cycle rather than a stranded asset. The same two fields on the record, the norm and the manufacturing month, decide which phase of BS6 the vehicle belongs to, and the same Rs. 99 check shows them.

A Short Order of Operations

1. Treat BS7 as a 2029 date for new cars, and a draft. Nothing to do to a car you already own.
2. Buyer: check the record before the price. Emission norm, manufacturing month, then the April 2023 rule for Phase 1 versus Phase 2.
3. Seller of a BS6 diesel: plan a sale inside 2027-28. List from the record so the norm question is answered before it is asked.
4. Petrol and CNG owners: carry on. The draft does not touch your car's standing.
5. Watch the final notification. Dates can move after the comment window closes. We will update this guide when they do.

This is general practical guidance based on draft notifications and press reports as of 19 October 2026, not legal or financial advice. The BS7 dates are proposals until a final notification is issued, and vehicle-use rules differ by state and city. Confirm the specifics with the official notification and your transport office before you act.