The question most dealer-group executives ask about multi-channel advertising is whether it works better than a single focused channel. That is the wrong question. The right question is whether you can run eight channels in parallel, point them at a coherent weekly budget, and come out with a cost per lead under $40. A Southwest cohort did exactly that in early July 2026, and the numbers are worth examining.
Between July 2 and July 9, 2026, a group of 11 to 20 Southwest dealerships ran paid campaigns across eight distinct sub-channels simultaneously, spending $40K to $50K across the week. The cohort generated over 1,100 conversions and landed a cost per lead between $30 and $40. No channel ran in isolation. No budget was siloed behind a separate agency relationship. One engine moved all of it.
Why Does a Single Week Tell You Anything Useful?
The usual objection to a seven-day window is that it is too short to draw conclusions from. That objection applies to new campaigns finding their footing, not to a steady-state multi-channel portfolio. When campaign structures are already live, audiences are already warmed, and inventory data is already feeding creative, a week of performance reflects the portfolio's operating baseline.
That is what this window is. The cohort was not in a launch phase. Over the seven days, the campaigns generated approximately 1.36 million impressions and 44,000 clicks. At that volume, the CPL and click-through behavior are signal, not noise. A blended cost per click around $1 across eight channels, including Google Search and Performance Max, is not an accident of small sample size. It is what a disciplined budget allocation looks like when the channels are running together rather than competing with each other for the same dollar.
The other reason to take a seven-day window seriously: inventory-based automotive advertising does not have the luxury of a 90-day warm-up. A vehicle on the lot today may be sold by Thursday. Campaigns that cannot perform inside a week are campaigns that cannot respond to the actual inventory cycle.
How Does the Budget Actually Split Across Eight Channels?
Google Search took the largest allocation at 45% of spend, which is where intent-based demand capture lives. That is not a surprise. It is the right call for a cohort in a high-intent purchase category. The question is what the other 55% was doing.
Google Performance Max and Google Demand Gen together accounted for another 25%, split 15% and 10% respectively. PMax extends Search reach into display, YouTube, and Discover inventory while keeping the vehicle catalog synchronized. Demand Gen runs prospecting creative in YouTube and Gmail placements where buyers are not actively searching but can be interrupted at the right moment.
Microsoft Search held 10%, Meta Traffic held 10%, and Meta's two direct-response formats, Lead Ads and Automotive Inventory Ads (AIA), each held 5%. Connected TV and streaming took the final 5%.
That distribution is not arbitrary. Google Search anchors the intent layer. PMax and Demand Gen extend reach without competing on the same intent signals. Microsoft Search captures the search audience that did not appear on Google. Meta's three-way split separates brand awareness (Traffic), direct form capture (Lead Ads), and dynamic vehicle inventory (AIA) into distinct objectives rather than forcing one campaign to carry all three jobs. CTV sits at the edge of the portfolio, reaching the household before the shopper types a query.
The structure tells you something about what multi-channel discipline actually looks like at a dealer group. It is not running everything at once. It is assigning each channel a distinct job and budgeting against that job, not against a blended efficiency number that no single channel can optimize toward. As we examined in the piece on multi-channel budget structure, agencies running one channel at a time cannot produce this allocation because they have no mechanism to adjudicate across channels in real time.
What Does a $1 Click Actually Mean Across a Full Portfolio?
The blended average cost per click across the full eight-channel portfolio landed around $1. That number needs context before it means anything.
Google Search CPCs in automotive markets are not $1. Competitive brand terms and model-specific queries regularly trade above $3 to $5. The blended figure comes down because the portfolio includes channels where the cost-per-click structure is fundamentally different: Meta's Traffic objective, Demand Gen, and CTV do not price on keyword auction mechanics. When you pool a $3 to $4 Google Search CPC with a $0.40 Meta Traffic CPC and a CPM-priced CTV placement, the blend moves toward $1. That is by design, not by accident.
What the blended CPC tells you is whether the portfolio is buying efficiently across the channels it is running. At ~$1 across 44,000 clicks, this cohort was. The conversion rate across the full portfolio landed in the 2 to 4% range, which, when applied to the click volume, produces the 1,100-plus conversions the cohort recorded.
The more important number is the CPL. A cost per lead between $30 and $40 across eight channels, in a seven-day window, during the peak of the summer selling season, is a number that holds up against what a single-channel program costs when it is not competing against its own parallel campaigns for inventory and audience. Automotive CPLs on Google Search alone, without the complementary channels, tend to run higher. Adding the lower-cost channels into the budget does not dilute lead quality if the channels are assigned distinct objectives. It reduces the blended CPL while maintaining the volume the high-intent channels supply.
Where Does CTV Fit in a Direct-Response Stack at a Dealership?
Connected TV gets 5% of the budget here, the smallest individual allocation in the portfolio. That positioning is intentional and worth examining.
CTV is not a direct-response channel in the same sense that Google Search is. You cannot bid on a viewer the way you bid on a keyword. What CTV does is reach the household before the search query exists: the shopper who is three weeks from purchase and has not typed anything into a search bar yet. That exposure shortens the conversion window once they do reach a search platform, and it builds recall that makes brand-term and model-specific search ads more efficient when the buyer finally queries.
At 5% of a $40K to $50K weekly budget, CTV's position in this portfolio is consistent with what we reported in the Southwest cohort's earlier quarter-long CTV run, where 15% CTV allocation still kept the blended CPL under $30 over a $300K to $400K quarter. The principle holds at both budget scales: CTV does not have to anchor the portfolio to contribute to a sub-$40 blended CPL. It earns its allocation by compressing the funnel for every other channel running alongside it.
Dealers who treat CTV as a broadcast channel (expensive, brand-only, no accountability) are pricing it wrong. At 5% of a weekly multi-channel portfolio, it is a funnel primer, not a budget line item to debate.
What Does Meta's Three-Objective Split Actually Tell You?
Meta's 20% total allocation across three objectives (Traffic at 10%, Lead Ads at 5%, AIA at 5%) is a structure that requires explanation, because most single-channel Meta programs do not look like this.
A Traffic campaign on Meta runs to reach people who are in-market or in-audience and drives them to the dealer's vehicle detail pages. It builds the pixel audience that makes retargeting viable. A Lead Ads campaign captures direct form submissions inside the platform, with leads delivered as ADF/XML to the dealer's CRM lead inbox, without the buyer ever leaving the app. AIA, Meta's Automotive Inventory Ads format, serves dynamic creatives pulled from the live vehicle catalog, matching specific vehicles to buyers whose behavior signals interest in that segment.
Running all three simultaneously means Meta is doing three distinct jobs: prospecting at scale, direct form conversion, and dynamic inventory retargeting. Those jobs compete for budget within a single Meta campaign only if you force them into the same objective. Splitting them into three campaigns lets each optimize toward its own goal, and lets the budget allocation tool assign spend to the objective that is performing on its own terms.
This is the structure that the new/used/CPO split argument applies to at the channel level: each objective is a distinct inventory and audience condition, and treating them as one blended thing produces a blended result that satisfies none of the individual goals.
How AUTONOMi Drives These Results
The eight-channel allocation in this cohort is not the output of eight separate briefs sent to eight separate channel teams. It is the output of a single daily budget allocation pass that AEGIS, AUTONOMi's AI workforce, runs across every paid sub-channel simultaneously. Google Search, PMax, and Demand Gen; Meta Traffic, Lead Ads, and AIA; Microsoft Search; and CTV all receive their allocation from one reasoning pass, not from separate optimization loops that have no visibility into what the others are spending.
The daily inventory-diff rebuild cascade AEGIS runs keeps campaign structures across Google Search, PMax, Demand Gen, and Microsoft synchronized with the dealer's live lot. When a vehicle sells, it drops out of active ad groups. When a new unit arrives, it enters the rotation. The creative that runs reflects what is actually available, not what was available at campaign launch two weeks ago.
Meta's three-objective structure runs through AUTONOMi's Meta Marketing API integration: vehicle-catalog campaigns with per-model product sets, Lead Ads with instant-form configurations delivering ADF/XML directly to the dealer's CRM lead-routing inbox, and AIA campaigns as dynamic catalog carousels. The compliance triad, a three-stage strategist-composer-verifier review, clears ad copy and landing-page assertions before any of it reaches the platform and spends. As we described in the compliance block piece, a block is a structured diagnosis, not a roadblock.
The CTV allocation routes through the Connected TV and Streaming Layer add-on module, which handles committed inventory placements outside the automated budget optimization loop by design. AEGIS manages the surrounding paid channels against the same weekly ceiling; the CTV position is a fixed allocation the budget engine routes around, not into.
AXIOM, the governance layer, enforces the spend ceiling, per-channel allocation logic, and the compliance gate on every action. The dealer audit trail records every budget movement and creative decision with a hash-chained timestamp.
The result is not better performance because the channels individually outperformed. It is better performance because the channels were not running against each other for the same audience, the same inventory, or the same dollar. That coordination is the job. It is the job an agency constellation of eight channel specialists cannot do: no single person in that structure sees the whole portfolio at once.
Where Multi-Channel Orchestration Goes Next
The cohort in this window is not a test. It is a steady-state portfolio showing what coordinated multi-channel allocation produces in a single week at the peak of a selling season. The summer selling window compresses the decision timeline for buyers and raises CPCs on intent-based channels. A portfolio that holds a $30 to $40 CPL under those conditions is not doing it by spending less. It is doing it by routing the dollars where they are most efficient across the full channel set, not within a single channel's optimization loop.
The dealers who will move off that benchmark are the ones who continue to manage channels sequentially: Google first, Meta when the Google budget is spent, CTV when someone at a conference said it works. Sequential management does not produce coordinated efficiency. It produces eight independent programs sharing a brand logo.
The dealers who will compound this result are the ones who treat the budget allocation as a single daily decision across the full channel set, hold the allocations they mean to hold without freezing the optimization logic, and let each channel do the specific job it is best at rather than forcing one channel to carry the whole funnel. If that structure is what your group is looking to build, a 30-day pilot is where that conversation starts.
