Carmax Inc vs Penske Automotive Group Inc

Carmax Inc (KMX) is overvalued and Penske Automotive Group Inc (PAG) is fairly valued.

Against our estimates of intrinsic value, PAG trades at the wider discount: a margin of safety of +0%, against -111% for KMX.

Values as of the 22 Sept 2026 close.

Carmax Inc (KMX)

Discounting its cash flows at 7.0% values the shares at $26.99; the price of $56.84 is 111% above that value.

Leak Score 0/100 on 3 of 12 signals

Penske Automotive Group Inc (PAG)

Discounting its cash flows at 7.9% (average of 2 methods) values the shares at $210.83; the price of $209.86 sits right on that value, and 80% of that value comes from beyond year five.

Leak Score 30/100 on 3 of 12 signals

MetricKMXPAG
VerdictOvervaluedFairly valued
Price$56.84$209.86
Intrinsic value$26.99$210.83
Margin of safety-111%+0%
Leak Score0/100 (3/12)30/100 (3/12)
Market cap$8.1B$13.8B
Revenue growth, 5 years6.7%9.2%
Operating margin2.1%3.4%
Net margin0.8%2.8%
Return on equity3.6%15.6%
Debt to equity3.081.61
P/E37.4x15.4x
Forward P/E14.5x
P/B1.3x2.4x
Dividend yield2.0%

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