Brand Comparison
Cox Marine vs Mercury Outboards
A straight, factual side-by-side — both are excellent builders that simply shine in different places. Here is how they line up and who each one suits.
| Cox Powertrain Ltd. | Mercury Marine | |
|---|---|---|
| Founded | Project from 2007–2008; production 2020 | 1939 |
| Headquarters | Shoreham-by-Sea, United Kingdom | Fond du Lac, Wisconsin |
| Ownership | Privately held (Cox Powertrain) | Brunswick Corporation (since 1961) |
| Stock / Ticker | Privately held | NYSE: BC — parent Brunswick Corporation |
| Annual Revenue | Not publicly disclosed (private company) | $5.24 billion (2024, Brunswick Corporation) |
| Employees | Not publicly disclosed | 5,200+ worldwide (Mercury Marine), including roughly 2,200 union workers at the Fond du Lac campus |
| Manufacturing | One purpose-built manufacturing facility | 9 manufacturing plants worldwide |
| HP Range | 300 – 350 hp | 2.5 – 600 hp |
| Fuel / Power | Diesel (compression-ignition) | 4-stroke gasoline + electric (Avator) |
| Product Lines | 2 families | 6 families |
| Signature Tech |
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| Famous For | The world's first purpose-built high-power diesel outboard. Cox is famous for the CXO300 — a ground-up V8 diesel aimed at military and commercial operators, not a converted automotive engine. | American-built performance and racing pedigree. Mercury Racing is a household name in high-horsepower and offshore circles, and the brand carries the widest U.S. service network — a big reason it dominates repower conversations. |
| Best For | Military, commercial and superyacht-tender operators needing a rugged, long-range diesel outboard and single-fuel logistics. | High performance, offshore power, and repowers backed by the widest U.S. service network. |
Revenue and workforce figures are point-in-time snapshots from company filings for the year shown (in several cases the parent company, not just the marine division). Stock price, market value, and ROI change daily — use the ticker for live pricing.
Where Each Brand Dominates
Cox Marine on the water
Military & Commercial
Rugged diesel built for patrol, security and workboat duty with single-fuel logistics.
Long-Range & Efficiency
Diesel economy and torque suit heavy loads and extended range.
Superyacht Tenders
Diesel-tender option matching a mothership's fuel supply.
Mercury on the water
Tournament Bass Fishing
A dominant tournament choice — at the 2020 Bassmaster Classic the top 8 finishers all ran Mercury 250 Pro XS, and 33 of 53 boats in the field were Mercury-powered.
Offshore Powerboat Racing
Mercury Racing (450R, 300R, and APX competition engines) is deeply rooted in offshore and closed-course racing.
Repower & High-Horsepower
The 600 hp Verado and SmartCraft rigging make Mercury a go-to for large multi-engine repowers.
Which one fits you?
Choose Cox Marine if…
- ✓Purpose-built marine diesel (not an adapted car engine)
- ✓Diesel efficiency and range (claims of ~30% better economy)
- ✓Commercial/military durability and single-fuel logistics
Choose Mercury if…
- ✓Broadest HP range of any outboard brand (portable through 600 hp)
- ✓Deep U.S. dealer, parts, and service network
- ✓Strong repower and multi-engine offshore support via SmartCraft
Browse & Official Links
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The Honest Take
Both Cox Powertrain Ltd. and Mercury Marine are top-tier outboard builders — you can buy either with confidence. Cox Marine leans toward military, commercial and superyacht-tender operators needing a rugged, long-range diesel outboard and single-fuel logistics, while Mercury leans toward high performance, offshore power, and repowers backed by the widest u.s. service network. For most buyers the deciding factors are which dealer and service network is strongest in your area, and which brand your local mechanics know best. Whichever you choose, you can browse listings for both on OutboardListings.com.
FAQ
Is Cox Marine or Mercury the better outboard?
Neither is universally "better" — they lead in different areas. Cox Marine is best for military, commercial and superyacht-tender operators needing a rugged, long-range diesel outboard and single-fuel logistics. Mercury is best for high performance, offshore power, and repowers backed by the widest u.s. service network. The right choice depends on how you boat and what dealer support is near you.
What is the HP range of Cox Marine vs Mercury?
Cox Powertrain Ltd. offers 300 – 350 hp, while Mercury Marine offers 2.5 – 600 hp.
Who owns Cox Marine and Mercury?
Cox Powertrain Ltd.: Privately held (Cox Powertrain). Mercury Marine: Brunswick Corporation (since 1961).