Mexico City Grand Prix: unpacking the four revenue lines inside the 22,228 million peso forecast

Nine days before the V6 turbo engines fired at the Autódromo Hermanos Rodríguez, the Mexico City Chamber of Commerce, Services and Tourism (Canaco) issued a press release. The first line read 22,228 million pesos of economic spillover from the Mexico City Grand Prix, up 6.5% on the previous year. Within a morning the figure covered every sports desk in Mexico and travelled on to the wire services. Not one report asked what the four component lines added up to. I have sat in the Foro Sol section three seasons running. Every time, the feeling in the grandstand on Friday never matched the number published on Thursday. The grandstand is real. The spreadsheet needs checking. People look at 22,228 million pesos and shout. I read the small print. Canaco is the capital's chamber of commerce, an advocacy body, not an auditor. Its president, Vicente Gutiérrez Camposeco, put his name to the statement and said exactly what his job requires: a major event is delivering value to the city. But the sole source for the entire series of figures is the organisation with an interest in proving it. No independent audit. No published methodology. No cost side. My three-source rule does not allow me to call this data; it is a claim dressed in numerical format. The race has run continuously since 2026, interrupted only by COVID in 2026. Behind it sits a contract structure few mention: the city pays a hosting fee to FOM, the commercial rights holder, and FOM redistributes to the teams. That money leaves the local economy, on top of security, traffic management and road closures around the Hermanos Rodríguez site for the better part of a week. This year brought two new variables. Sergio “Checo” Pérez is back on the grid, carrying the domestic audience a home driver generates. And Mexico City has just come through June and July with World Cup matches at the Estadio Azteca. The hotel corridors before the World Cup said more than any press conference that summer: corporate hospitality budgets, premium room inventory and public attention had all been drawn down once already in the same year. The four published lines look like this. Ticketing: 8,420 million pesos, 37.9% of the total. Across roughly 400,000 three-day attendances, that is 21,050 pesos per attendance, about USD 1,140. That average sits above the entire published ticket tier sheet. Three possibilities: attendance is understated, the line includes premium hospitality, or the figure has been rounded up. With no methodology, there is no way to tell. Travel agencies, tour guides and transfers: 4,518 million pesos, 20.3%. The most plausible of the four, because it reflects inbound visitors buying packages. Mexico City already has the tourism infrastructure; a race weekend pulls exactly the high-spend visitor the city wants. Hotels: 366.854 million pesos, 1.7%, on an 85–95% occupancy assumption. At 8,000–10,000 pesos a night, that equals 37,000 to 46,000 room-nights. A city of more than 20 million people holds tens of thousands of rooms. If occupancy genuinely touched 85–95% across three race nights, room revenue would be several times larger. Or the assumption applies only to a cluster of hotels around the circuit, and the release does not say. Media and advertising: 8.92 million pesos, 0.04%. The most telling line, because it is close to zero. Add the four: 13,313.774 million pesos, or 59.9%. The remaining 8,914.226 million pesos — 40.1% — carries no explanatory line at all. In a professional impact study a 40% gap is a material methodological failure: the reader cannot reconstruct the calculation. The residual most likely covers food and beverage, retail, merchandise, local transport and general tourist spend, all listed verbally in the release and never quantified. Three more calculations, mine, to put the figure in frame. One: the 2026 baseline. Divide 22,228 by 1.065 and you get roughly 20,871 million pesos. Absolute growth is about 1,357 million pesos, or USD 73 million. That is the entire scale of the 6.5% jump being celebrated. Two: currency. At around 18.5 pesos to the dollar, the headline equals USD 1.2 billion; the ticketing line alone is about USD 455 million. Three: inflation. Mexican CPI runs near 4–4.5%. Strip it out and real growth is 2.0–2.4%. The real number may sit inside the model's own margin of error. Then comes the part nobody does: the subtraction. The whole 22,228 million pesos is gross spending, not net benefit. No deduction for the hosting fee and team payments. No deduction for security, traffic and road closures. No deduction for substitution — locals redirecting existing spend into race weekend rather than adding new spend, while regular tourists avoid the city that week. No deduction for displacement — hotel rooms and restaurant tables sold to race visitors are not sold to business travellers. And no multiplier is published or justified. Net benefit is far below 22,228 million pesos, plausibly by a multiple. That is why I keep my rule: I do not listen to promises, I read the contract terms. The counter-intuitive angle sits in the smallest line on the sheet. Media and advertising is valued at 8.92 million pesos, less than a Paddock Club table for the weekend. This is a pure consumption-spend model, not a brand-value model. Yet the biggest asset an F1 round hands a host city is three days of global broadcast, hundreds of markets, hundreds of millions of viewers, with the city's logo in frame. Canaco does not price it. Either it cannot, or it will not, because pricing it would raise the question of who actually benefits. There is a further layer, one of political economy. Forecasts of this kind tend to be born to serve a negotiation: a hosting contract renewal, or a justification for public spending before the city council. The timing is telling too: one week before the race, which is one week before every figure becomes checkable against actual attendance, actual ticket revenue and actual occupancy. And it rests on one man. The entire emotional story of 2026 sits on Pérez. The commercial thesis does not need him to be fast; it needs him present, starting, and staying in the race long enough for the stands to sing. One retirement on lap one, one Q1 exit, and the homecoming narrative loses most of its weight. The forecast was almost certainly built before his 2026 form was established, meaning it already assumed the best-case script. Every big approach starts with a message. The 22,228 million peso forecast started with a press release, and will end with another one, after the race, confirming the estimate was met or exceeded. That is the near-universal pattern for forecasts commissioned by promoters and chambers of commerce. What to watch once the chequered flag drops is not the 22,228 figure. It is three smaller things: actual gate attendance against 400,000, sell-through by grandstand, and real occupancy across the hotel cluster around the circuit. If all three hold, the forecast stands operationally, even while it fails economically for want of a subtraction. If one of the three misses badly, we have the right to ask what the 40% residual was built from. A city that spends public money to host a global event deserves a net-impact study in return: audited, with a cost side, with a transparent multiplier. Mexico City has the academic capacity to produce one. The only question is whether anyone wants that number published. If net benefit turns out to be a third of the figure now being celebrated, the next renewal negotiation starts from a different position.