Monthly Auto Sales Explained: Dispatches vs Retail Registrations and How to Read Them Before Results

Every month Indian auto makers and industry bodies put out volume numbers that move auto stocks well before the full P&L shows up. The catch is that two quite different numbers usually travel under the same word, “sales”. One is wholesale dispatch, what the company ships from the factory to its dealers. The other is retail registration, when a buyer takes delivery and the vehicle lands in the government’s database. Getting monthly auto sales dispatch vs retail right is one of the most useful things you can do before opening an auto company’s quarterly results. Below we define both, show where SIAM and FADA/Vahan part ways, go through the September and August 2026 figures from the primary releases, and explain how to map monthly volumes onto revenue, mix and inventory risk. It is a companion to our pillar on how to analyse quarterly results of a company.

Monthly auto sales dispatch vs retail: the core distinction

Wholesale dispatch (SIAM’s monthly tables call it domestic sales) counts the vehicles an OEM invoices and ships into its dealer network. That is normally the volume that ends up in the company’s domestic sales line when the quarter closes. Retail registration counts vehicles registered at Regional Transport Offices (RTOs). The Federation of Automobile Dealers Associations (FADA) publishes monthly retail totals compiled with the Ministry of Road Transport & Highways from the Vahan system. MoRTH’s Vahan dashboard shows how big that network is: 36 states, 1,469 RTOs and 1,468 Vahan-running RTOs. FADA’s September 2026 release says its retail data was collated as on 3 October 2026 from 1,468 out of 1,469 RTOs.

Put simply, SIAM’s domestic sales tell you how many units manufacturers pushed into the channel, and FADA’s retail tells you how many customers actually registered. The difference is stock piling up or being cleared at dealers. You usually see that difference in discounts, channel finance costs and how disciplined the next month’s dispatches are, long before a quarterly report’s footnotes admit it.

Wholesale can look strong while retail is soft, or the reverse. Revenue follows dispatch; demand durability follows registration. Treat them as two instruments, not one sales number.

SIAM, FADA and Vahan: who counts what

The Society of Indian Automobile Manufacturers (SIAM) represents the OEMs. Its monthly and quarterly releases report production and domestic (wholesale) sales by category: passenger vehicles (PV), two-wheelers (2W), three-wheelers (3W) and, in the full-quarter tables, commercial vehicles (CV). Read the footnotes every time. Luxury brands such as BMW, Mercedes, JLR and Volvo Auto are often left out of the monthly PV total, and Tata Motors’ domestic sales may be included only through a note in the document.

FADA is the dealers’ voice. Its monthly releases give retail registrations by category and usually throw in PV inventory days, fuel-mix commentary and dealer sentiment surveys. Since FADA works off Vahan RTO data, it sits much closer to real end-demand than factory billing does. Read SIAM without FADA, or the other way round, and you end up mistaking festive stocking for demand, or calling a quiet wholesale month a demand collapse when dealers were just clearing stock.

September 2026 wholesale: what SIAM reported

SIAM put out its Q2 FY2027 (July–September 2026) performance note on 15 October 2026, and it carries the September monthly domestic sales numbers too. For September 2026, SIAM reported:

• Production of passenger vehicles, three-wheelers, two-wheelers and quadricycles at 34,52,554 units.
• Domestic passenger vehicle sales of 4,54,574 units (BMW, Mercedes, JLR and Volvo Auto data not available; Tata Motors domestic sales included in this document—without Tata Motors, total PV would be 3,85,764 units).
• Three-wheeler domestic sales of 98,162 units.
• Two-wheeler domestic sales of 24,63,103 units.

Coverage of the same SIAM release by New Kerala (15 October 2026) said passenger vehicle wholesales rose 21.8% year-on-year to 4,54,574 units from 3,73,347 units a year earlier, two-wheeler dispatches rose 13.5% to 24.63 lakh units from 21.70 lakh units, and three-wheeler dispatches rose 16% to 98,162 units from 84,635 units. Treat those YoY percentages as SIAM-attributed context; the absolute September totals are from SIAM’s own page.

September 2026 retail: FADA’s festive print

FADA’s September 2026 vehicle retail release (6 October 2026) showed a strong festive month, though one bent out of shape by the base:

• Overall retail: 25,36,920 units, up 31.82% year-on-year and 4.69% month-on-month—best-ever September.
• Two-wheelers: 17,90,188 units (+33.08% YoY).
• Passenger vehicles: 4,27,213 units (+32.10% YoY, +6.17% MoM)—best-ever September for PV retail.
• Commercial vehicles: 1,03,557 units (+37.62% YoY)—first September above one lakh in FADA’s series.
• Three-wheelers: 1,32,570 units (+22.25% YoY).
• First-half (April–September) retail: 1,55,12,319 units (+20.77% YoY).

FADA itself called the 31.82% YoY headline the most base-distorted number of the year, because buyers in September 2025 had held off ahead of the GST 2.0 change on 22 September 2025. The cleaner signals, it said, were the record levels, the 4.69% MoM rise and an underlying run-rate of roughly 17% for the first five months of FY27 once the distorted September is left out.

August 2026 shows the same split

SIAM’s August 2026 note (15 September 2026) reported domestic passenger vehicle sales of 4,39,309 units, three-wheelers at 93,764 and two-wheelers at 20,34,698, with production (PV, 3W, 2W and quadricycle) at 31,57,822 units. SIAM Director General Rajesh Menon said August PV sales of 4.39 lakh units were up 36.5% on August 2025, with three-wheelers up 22.8% and two-wheelers up 10.5%. Leave out Tata Motors and SIAM’s August PV total would have been 3,74,056 units.

On the retail side, FADA’s August 2026 release had overall registrations at 24,23,201 units (+17.51% YoY, −6.48% MoM). Two-wheelers came in at 17,14,610 (+19.69%), passenger vehicles at 4,02,398 (+16.14%), the first August above four lakh, commercial vehicles at 90,769 (+14.45%) and three-wheelers at 1,22,281 (+8.64%).

Reading the gap between dispatch and retail

Put September’s PV numbers side by side. SIAM’s wholesale PV figure was 4,54,574 units and FADA’s PV retail was 4,27,213 units. On those two headlines alone, wholesale ran about 27,000 units ahead of retail in the month. That is textbook channel filling before the festive window, with OEMs stocking dealers ahead of Navratri, Dussehra and Diwali.

The same month also shows why simple subtraction can mislead you. SIAM’s footnote says that without Tata Motors the September PV wholesale total would be just 3,85,764 units, which is below FADA’s 4,27,213 retail number, because the two cover different sets of companies. Luxury OEMs are missing from SIAM’s monthly PV total, while FADA’s retail covers every RTO. So always check that you are comparing the same universe.

FADA’s inventory comment tells you more than any one-month gap. In September 2026 it said PV inventory climbed another five days over August-end to around 43–45 days, well above its recommended 21-day benchmark, with 60% of PV dealers carrying more stock ahead of the festivals. In August it had already flagged inventory at about 38–40 days after a five-day rise over July-end. When inventory days keep rising while wholesale stays high, that is your cue to read OEM commentary on discounts, dealer support and production planning closely once results arrive.

If wholesale leads retail for several months and inventory days climb above the dealer body’s comfort band, treat the next OEM’s “volume growth” line as a channel story until retail catches up or dispatches slow.

The Q2 FY2027 wholesale picture from SIAM

Monthly numbers matter most once you stack them into the quarter you are about to study. For July–September 2026, SIAM reported domestic sales of:

• Passenger vehicles: 13,60,687 units (about 1.36 million), up 30.7% versus Q2 of the previous year.
• Commercial vehicles: 3,09,063 units, up 28.7%.
• Three-wheelers: 2,85,342 units, up 23.6%.
• Two-wheelers: 64,32,842 units (6.43 million), up 15.2%.

SIAM also said utility vehicles made up 68% of total PV sales in the quarter, with UV sales up 34.2% and passenger cars up 24.9% on Q2 of the year before. Mix like this matters as much as total units. A quarter heavy on UVs usually carries a higher average selling price (ASP) than one heavy on hatchbacks, which is why revenue can grow faster than volumes, or slower, once you open the P&L.

For April–September 2026, SIAM’s half-year domestic sales came to 26,37,067 passenger vehicles, 5,74,255 commercial vehicles, 5,01,879 three-wheelers and 1,20,86,812 two-wheelers. Production across the listed categories was 1,05,57,400 units in Q2 and 1,99,46,193 units in H1, with SIAM’s usual exclusions for some luxury and CV brands.

Turning monthly volumes into an OEM revenue view

When an auto OEM reports, don’t stop at one volume headline. Do three reconciliations:

1. Domestic wholesale vs the company’s own monthly numbers. The press releases companies put out at the start of each month should roughly add up to SIAM’s category figure, once you adjust for what SIAM includes. A big gap with no footnote is a red flag for your model.
2. Wholesale vs FADA retail for that OEM’s segment. The free FADA release rarely breaks retail out by OEM, but category retail against category SIAM tells you whether the industry is stocking up or clearing out. Read it together with FADA’s inventory-days comment.
3. Volume vs value. In Q2 FY2027, UVs at 68% of SIAM’s PV sales are a reminder that mix, not just units, drives revenue. Exports, spares and other income also sit outside the domestic dispatch number, and our note on other income in quarterly results helps when treasury gains or one-offs pump up profit while auto volumes are the real story.

If you follow listed auto names through choppy sessions, like the ones in our auto stocks to watch wrap, think of the monthly SIAM/FADA pair as the volume tape and the quarterly result as the confirmation on price and mix. A strong SIAM month with weak FADA retail and rising inventory days is a very different earnings setup from retail-led growth with stock inside the dealer body’s comfort band.

Your routine for the next monthly release

Before you touch an earnings model on the back of a monthly auto headline, go through these steps in order:

1. Read SIAM’s domestic sales line and every footnote on which OEMs it covers.
2. Read FADA’s category retail line and its inventory-days or dealer-stock comment for PVs.
3. Check whether YoY growth is flattered by the base (FADA openly flagged September 2026’s 31.82% YoY as base-distorted after pre-GST deferrals in September 2025).
4. Look at the MoM direction: FADA’s September MoM of +4.69% overall and +6.17% for PVs was a cleaner sequential read than the YoY percentage.
5. Think about what the OEM’s ASP and discount commentary will have to explain if wholesale ran ahead of retail while inventory days sat near 43–45 against a 21-day benchmark.
6. Only after that, turn category volumes into a rough company-level revenue estimate, adjusting for mix (UV vs cars, ICE vs alternate fuels) and exports.

Following that order stops you from treating “sales up X%” as one clean fact. In Indian autos, X% could be factory billing, RTO registrations, or a reporter’s mix of the two.

Why this matters when auto results come out

Auto results are seasonal. Festive stocking lifts Q2 and Q3 wholesale, and retail conversion decides whether that stock turns into good-quality revenue or pressure on the channel. SIAM’s Q2 FY2027 remark that every major segment posted its highest-ever Q2 sales sets a high bar on volume, and FADA’s best-ever September retail plus elevated PV inventory days set the bar on quality. When the OEM reports, we would check whether revenue and EBITDA per vehicle moved in step with volumes, whether management talks about dealer inventory and discounts, and whether guidance is banking on retail conversion or more channel filling.

For a wider framework on reading any company’s quarter, not just auto volumes, see the pillar guide on analysing quarterly results. For monthly auto sales, keep SIAM and FADA open next to each other every month. That is how you tell dispatch optics apart from retail demand before the P&L lands.

Sources for figures in this article: SIAM press releases on Q2 FY2027 / September 2026 and August 2026 performance; FADA September 2026 and August 2026 vehicle retail PDFs; Vahan dashboard network stats; New Kerala’s 15 October 2026 SIAM-attributed YoY percentages for September wholesale.