Is CarMax's $150M SG&A Target Enough to Close the Margin Gap with AutoNation and Lithia?
CarMax (KMX) has committed to delivering at least $150 million in SG&A reductions by the end of fiscal year 2027. With a 30% reduction in its Customer Experience Center workforce already executed in Q3 FY2026 and AI-driven efficiency tools like Sky rolling out across operations, management is signaling urgency. But the real question is whether $150 million moves the needle enough against franchised dealer peers AutoNation (AN), Lithia (LAD), and Group 1 (GPI) — all of which operate at meaningfully higher margins.
The SG&A Efficiency Gap Is Real
The most direct way to compare overhead efficiency across auto retailers is SG&A as a percentage of gross profit, since it normalizes for differences in revenue mix and per-unit economics.
| Company | FY2025 SG&A ($B) | FY2025 Gross Profit ($B) | SG&A / Gross Profit | Operating Margin |
|---|---|---|---|---|
| KMX | $2.44 | $3.22 | 75.5% | 2.80% |
| AN | $3.36 | $4.70 | 71.6% | 4.83% |
| LAD | $3.94 | $5.47 | 72.1% | 4.06% |
| GPI | $2.55 | $3.50 | 72.7% | 4.23% |
CarMax's SG&A consumes 75.5% of every gross profit dollar — roughly 3 to 4 percentage points more than its peers. That gap translates directly into an operating margin that trails AutoNation by over 200 basis points and Lithia by 126 basis points.
What $150M Actually Buys
If CarMax delivers the full $150 million in annualized SG&A savings against its FY2025 base, the math works out as follows:
| Metric | Current (FY2025) | Pro Forma (−$150M) | Peer Average |
|---|---|---|---|
| SG&A | $2,435M | ~$2,285M | — |
| SG&A / Gross Profit | 75.5% | 70.9% | 72.1% |
| Operating Income | $789M | ~$939M | — |
| Operating Margin | 2.80% | 3.33% | 4.37% |
On a gross-profit-efficiency basis, $150 million in savings would actually push CarMax below the peer average of 72.1%, landing at roughly 70.9%. That's a genuine improvement — CarMax would go from the least efficient operator to arguably the most disciplined on overhead absorption.
But operating margin tells a different story. Even with the full savings realized, CarMax's pro forma operating margin of ~3.3% would still trail AutoNation (4.8%), Group 1 (4.2%), and Lithia (4.1%) by 80 to 150 basis points.
The Structural Gross Margin Problem
The disconnect between SG&A efficiency and operating margin reveals CarMax's deeper challenge: gross margin. At 11.3%, CarMax's gross profit margin is 320 to 640 basis points below its franchised peers.
| Company | Gross Margin | Key Drivers |
|---|---|---|
| AN | 17.7% | New-car franchise margins, F&I income, collision/parts |
| GPI | 15.5% | Multi-brand franchise portfolio, aftermarket services |
| LAD | 14.9% | Scale across new/used, Driveway digital platform |
| KMX | 11.3% | Pure used-car model, lower per-unit GPU, limited F&I |
CarMax's used-only model inherently generates lower per-unit gross profit than franchised dealers who benefit from new-car allocation advantages, manufacturer incentive programs, higher-margin parts and service departments, and stronger F&I penetration. No amount of SG&A cutting can offset a 400+ basis point gross margin disadvantage.
Progress So Far Is Mixed
Through the first three quarters of FY2026, CarMax's SG&A trajectory has been uneven:
| Quarter | SG&A | Year-Ago | Change |
|---|---|---|---|
| Q1 FY2026 (May '25) | $660M | $639M | +$21M |
| Q2 FY2026 (Aug '25) | $601M | $611M | −$10M |
| Q3 FY2026 (Nov '25) | $581M | $576M | +$5M |
| YTD Total | $1,842M | $1,826M | +$16M |
Year-to-date SG&A is actually up $16 million despite the workforce reduction and efficiency initiatives. Management attributed Q1 increases to volume-driven costs and marketing investment in the "Wanna Drive" brand campaign. The 30% CEC headcount cut in Q3 hasn't yet shown up in the numbers, suggesting the bulk of savings will flow through in Q4 FY2026 and into FY2027.
On the Q3 FY2026 earnings call, interim CEO David McCraight reaffirmed the $150 million target, noting the company aims to "operate leaner while taking smart risks." Marketing spend is expected to remain elevated in Q4 but at a lower year-over-year increase than Q3.
Investment Implications
The $150M target addresses the right problem but only partially. CarMax can close — and potentially eliminate — the SG&A efficiency gap with peers. That's meaningful, potentially adding ~$1 per share in EPS (pre-tax) on a diluted share base of approximately 147 million shares.
But the operating margin gap is roughly $440 million in annual operating income ($28.2B revenue × 1.57% margin gap to peer average). The $150 million in SG&A savings covers about a third of that shortfall. The remaining two-thirds is a gross margin problem rooted in CarMax's business model — solvable only through higher per-unit economics, greater F&I penetration, or service revenue expansion.
What to watch:
- Q4 FY2026 SG&A (reporting ~April 2026): First full quarter reflecting CEC headcount cuts — should show meaningful sequential decline
- Gross profit per unit trends: If GPU expands alongside SG&A cuts, the margin gap narrows faster than SG&A alone suggests
- CEO search outcome: The permanent CEO's strategic priorities will determine whether CarMax pursues additional margin levers beyond cost cuts
Sources: CarMax FY2025 and FY2026 quarterly financial statements; AutoNation, Lithia Motors, and Group 1 Automotive FY2025 annual financial statements; CarMax Q1-Q3 FY2026 earnings call summaries.