The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • BorgWarner is the larger company, worth $11.9B, about 1.3 times Aptiv.
  • Aptiv grew revenue faster over the last year (+2.3% vs +0.3%).
  • Aptiv keeps more of each dollar of revenue as operating profit (5.3% vs 5.0%).
  • On earnings, BorgWarner is the cheaper stock (33.7x vs 41.3x).
  • BorgWarner's price assumes faster free cash flow growth: about -4% a year, against -11% for Aptiv (reverse DCF).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasureAPTVBWA
Market cap$9.3B$11.9B
Share price$43.80$61.30
Revenue (last fiscal year)$20.4B$14.3B
Free cash flow (last fiscal year)$1.5B$1.2B
Revenue growth, last year+2.3%+0.3%
Revenue growth per year, last 5 fiscal years+6.9%+4.9%
Operating margin5.3%5.0%
Net margin1.2%2.9%
Return on equity2.5%7.4%
P/E (trailing)41.3x33.7x
Price / free cash flow6.08x10.1x
EV / EBITDA8.61x9.07x
FCF growth the price implies-11.1%-4.1%
Dividend yield—1.0%
Debt / equity1.06x1.45x
Fundamental gradeDC
Superinvestors holding it65
Insider purchases, last 12 months20

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

Aptiv

YearRevenueFree cash flowOp. margin
2021$15.6B$611M7.6%
2022$17.5B$419M7.2%
2023$20.1B$990M7.8%
2024$19.7B$1.6B9.3%
2025$20.4B$1.5B5.8%

BorgWarner

YearRevenueFree cash flowOp. margin
2021$11.8B$792M7.7%
2022$12.6B$947M8.0%
2023$14.2B$565M8.2%
2024$14.1B$711M3.9%
2025$14.3B$1.2B3.7%

Where the revenue comes from

Aptiv · by segments, 2025

Electrical Distribution Systems$8.8B43%
Engineered Components Group$5.8B28%
Advanced Safety and User Experience$5.8B28%

BorgWarner · by segments, 2025

Turbos & Thermal Technologies$5.8B40%
Drivetrain & Morse Systems$5.6B39%
PowerDrive Systems$2.3B16%
Battery & Charging Systems$590M4%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
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Questions

Which is bigger, Aptiv or BorgWarner?

BorgWarner (BWA), at $11.9B against $9.3B.

Is APTV or BWA cheaper?

By trailing P/E, BorgWarner (33.7x) is cheaper than Aptiv (41.3x). A lower multiple can also mean the market expects less growth.

Which grows faster, APTV or BWA?

Aptiv: revenue grew +2.3% over the last year, against +0.3%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.