Dufour 512 Review: Two-Year Run, 500's Successor (2026)

What the Dufour 512 actually is

The Dufour 512 Grand Large is a 15.10–15.20 m production cruiser designed by Umberto Felci of Felci Yachts and built by Dufour Yachts in France. It replaced the Dufour 500 Grand Large, which had achieved approximately 140 hulls before the 512 took over in 2016. Production ran only through 2016–2017, before the successor Dufour 520 Grand Large arrived in 2018.

Dufour doesn't publish production numbers for the 512 specifically. Given the two-year run, the total is expected to be substantially lower than the predecessor's 140-hull tally.

Construction is GRP: single-skin bottom, PVC foam sandwich sides and deck, vacuum-bagged polyester. The hull carries an L-shape bulb keel with a standard draft of 2.20–2.30 m, rising to 2.30–2.40 m at loaded displacement. No shallow-draft option has been confirmed for this model. The rig is a fractional sloop with a Volvo Penta D2-75 diesel (75 hp) on saildrive. Spar supply across the Dufour range comes from Sparcraft or Z-Spars, though the specific brand fitted to the 512 isn't confirmed at model level.

Compared to the 500 GL, the 512 added a fixed bowsprit for asymmetric spinnaker flying, redesigned the cockpit for more ergonomic short-handed sailing, and set the boom at a lower gooseneck with an upward angle. The rudder is a semi-elliptical design, closed-cell epoxy foam filled, on a solid stainless steel stock. Twin rudders appear on some layout configurations.

The performance indices tell you exactly what kind of boat this is. The displacement-to-length ratio of 166 puts the 512 in yachtdatabase.com's "light racer" category, where 79% of comparable designs are heavier. The comfort ratio of 28.5 sits in the moderate-comfort band. The capsize screening value is 1.96, comfortably below the 2.0 threshold considered acceptable for offshore passage-making. Theoretical hull speed is 8.97 knots under sail.

Layout and living aboard

This is where the 512 earns its Grand Large badge. The boat offers 3 to 5 cabin layouts with 3 to 4 heads, selectable at build. A 3-cabin private-owner version provides 9 berths and generous stowage, while 4- and 5-cabin charter configurations maximise bodies at the expense of personal space. Water capacity ranges from 719 L (3-cabin) to 750 L (5-cabin), reflecting different tank arrangements. Fuel capacity is a uniform 500 L across all layouts.

The beam of 4.78–4.80 m gives the saloon real width. If you want to understand how Dufour approaches interior design across their range, our guide: Dufour Yachts: The Interior Design Champion covers the brand's philosophy in detail. On the 512, that beam translates to a galley and nav station that feel residential rather than nautical. Whether that's a strength depends entirely on your priorities.

For a couple or small family planning extended cruising, the 3-cabin/3-head version is the one to find. It trades berth count for genuine living volume. The 5-cabin charter spec floods the used market at lower prices, but those boats typically carry high engine hours and harder wear on joinery and plumbing.

Where she earns her keep

The 512 is a coastal and moderate-offshore cruiser. CE category is Class A, inferred from the entire Grand Large range. Every other GL model from the 325 to the 525 carries Class A certification, though direct confirmation from a 512-specific source hasn't been returned. That means the design and scantlings are rated for open-ocean conditions, even if the boat's character leans toward Mediterranean and Caribbean trade-wind sailing.

Upwind sail area is approximately 100.8 m², split between a 52.80 m² mainsail and a 48.00 m² genoa. In 15–20 knots (Force 4 to 5), the boat moves well enough. Above Force 5, the wide stern and relatively light displacement deliver fast, if wet, reaching.

Below Force 4, expect to start the engine. One forum commenter put it plainly: "If you enjoy sailing the low SA/disp ratio might be a problem in anything less than 20 knots" (anonymous commenter, Sailboat Owners Forums, 2024-04-09). That 500 L fuel tank starts to make sense in this context. Another owner noted: "It is surprising to see so much fuel tankage, almost as much as the water" (anonymous commenter, Sailboat Owners Forums, 2024-04-09).

The boat motors at approximately 7.4 knots, adequate for harbour approaches and windless passages. The Volvo Penta D2-75 is well-proven and parts availability is excellent across Europe.

Weak points and what they cost

Light-air performance

The core limitation is physics. At 15,245 kg with roughly 100.8 m² of working sail, the boat needs genuine wind to move. The wide beam aft adds wetted surface, which a forum poster noted "looks like it adds substantial wetted surface." Budget for a good-quality asymmetric spinnaker (€3,000–€5,000 from a loft) and a furling code zero if the boat doesn't come with one.

Ballast ratio and stiffness

Ballast is 4,042 kg, giving a ratio of approximately 26.5%. That sits well below the 40% threshold SailboatData.com uses for offshore stiffness. The boat will heel readily in gusts and may feel tender to sailors coming from heavier-ballasted designs. This is a design choice, not a defect. The 512 is a volume cruiser, not a bluewater passage-maker.

Gelcoat and osmosis

Early Grand Large adopters across the range reported gelcoat defects and osmosis risk from water intrusion. Dufour specified NPG gelcoat and first-mat NPG resin barrier on the 512 to counter this. On any boat approaching ten years old, a pre-purchase moisture survey is non-negotiable. Budget €500–€1,000 for a thorough hull survey including moisture readings.

Build quality and after-sales

Reports from the wider GL range flag build-quality teething issues. One YBW Forum member, writing about a Dufour 41, stated: "The sequence of quality problems I have encountered is purely insane" (anonymous member, YBW Forum, 2022-08-22). Other GL-range owners describe needing to threaten legal action before warranty work was completed. These reports cover the broader range, not 512-specific complaints, but the pattern warrants caution. On a used boat, warranty is moot. Inspect joinery fixings, plumbing connections, and electrical terminations with forensic attention.

Draft and marina access

With a loaded draft of 2.30–2.40 m, the 512 can only enter major marinas, as yachtdatabase.com notes. If your cruising plans include shallow anchorages in the Bahamas, the Chesapeake, or the Dutch coast, this boat will ground before you arrive. No shallow-draft option was offered for the 512.

Rigging complexity

Multiple sources note that the 512's rigging setup "may require some experience to handle effectively" for short-handed sailing. If you're planning to cruise as a couple, factor in an electric winch upgrade (€2,000–€4,000 per winch) if the boat doesn't already have them.

How it ages

All surviving 512s are now 2016 or 2017 hulls, putting them at nine to ten years old. The vacuum-bagged GRP construction and PVC foam sandwich have a strong track record across the Dufour range when maintained. The NPG gelcoat barrier is the right specification for Mediterranean and tropical waters.

The Volvo Penta D2-75 is a reliable workhorse. Typical service intervals are 200 hours or annually. On ex-charter boats, check for engine hours north of 3,000. At that point, the saildrive seal, impeller, and injectors are all due. Saildrive diaphragm replacement runs roughly €300–€600 in parts.

The standing rigging on a ten-year-old boat of this class should be on its second set or approaching replacement. Budget €8,000–€15,000 for a full re-rig, depending on specification and local labour rates. This is true of any boat in this age bracket, not a 512-specific issue.

Sails on charter boats are typically blown by year six. Expect to replace the genoa and mainsail within the first season of private ownership if buying ex-charter. A new upwind suit for the 512 will cost €6,000–€10,000 depending on cloth choice.

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Dufour 512 price: what the market asks

As of August 2026, approximately 18–22 Dufour 512 Grand Large listings are active globally across major platforms. Asking prices range from €160,000 to €369,000.

The €160,000 floor seen on Botentekoop is likely a charter-worn outlier with high engine hours and tired sails. The bulk of the market sits between €269,000 and €330,000, based on six active iNautia listings of 2016–2017 hulls. A well-presented 2017 hull in Italy was listed at €369,000 on Boat24, representing the current ceiling.

Platform	Listings	Price range
YachtWorld	7	Not published in snippets
iNautia	6	€269,000–€330,000
Botentekoop	5	€160,000–€325,000
Band of Boats	≥1	€298,000 (incl. VAT)
Boat24	1	€369,000

The 25th-percentile price is approximately €269,000 and the 75th percentile approximately €330,000, estimated from iNautia's published range of six active listings as of August 2026. A private-owner 3-cabin boat with documented maintenance will command the upper quartile. A 5-cabin ex-charter hull with 3,000+ engine hours should price at or below the lower quartile.

Who this boat fits / doesn't

Good fit

• Couples or small families planning Mediterranean or Caribbean coastal cruising in 3-cabin configuration, who value interior volume over raw performance.
• Experienced coastal cruisers stepping up from a 38–42 ft boat who want more space without crossing into the complexity and cost of a 55-footer.
• Buyers comfortable with motoring in light conditions. If you accept that Force 3 means engine on, this boat's 500 L tankage and reliable D2-75 make that practical.

Poor fit

• Performance sailors. The low ballast ratio (~26.5%) and modest sail-area-to-displacement ratio will frustrate anyone who wants to sail in under 12 knots of breeze.
• Shallow-water cruisers. At 2.30–2.40 m loaded draft with no shoal option, this boat locks you out of the Bahamas, the ICW, and much of the Dutch and Danish coast.
• First-time boat owners without mentorship. The rigging complexity and 15 m length demand competent handling. This isn't a first boat unless you're bringing crew or instruction aboard.

Verdict

The Dufour 512 Grand Large is a volume cruiser that does volume well. Interior space, build specification (vacuum-bagged GRP, NPG osmosis barrier, Volvo saildrive), and layout flexibility are genuine strengths. The fixed bowsprit and redesigned cockpit over the predecessor 500 GL show thoughtful evolution of the platform.

The trade-offs are equally real. You will motor more than you sail in light air. The ballast ratio is too low for serious offshore ambitions. The draft eliminates entire cruising grounds. And the wider Dufour GL range carries a documented pattern of after-sales friction that any buyer should factor into their risk assessment.

At the market's mid-range of roughly €298,000 for a well-maintained 2017 hull (as of August 2026), the 512 represents solid value against comparable Bénéteau Oceanis and Jeanneau Sun Odyssey models. The decision formula is simple. If you sail where the wind blows above Force 4 and the water runs deeper than 2.5 m, this boat delivers more living space per euro than most of its competitors.