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Hull Gauge
Sheet 1001 · recomputed 5 Nov 2026, 03:30 UTC

9.4 m motor boat by Formula · built 2008–2024 (boats seen)

Formula
310 Bowrider used price guide

Gauge Value
Indicative · 8–24 boats
£126,000€147,000$161,000

Middle half £86,000€100,000$115,000 – £179,000€209,000$240,000

median asking price of 21 boats listed since Sep 2023, in today's prices · asking, not sold

Watch

9.45 mbeam 2.90 mdraft 0.94 mfull specification

A used Formula 310 Bowrider asks a median of £126,000€147,000$161,000 across 21 boats listed since Sep 2023, in today's prices. Half sit between £86,000€100,000$115,000 and £179,000€209,000$240,000, and each year of age takes about 9.1% off.

01

The field

Each number is one boat: its asking price in thousands of pounds, at today's market level, set above the year it was built. The orange line is the model's middle price for its age; the shaded band holds the middle half. Tap a number to see the boat behind it. The price scale is logarithmic: each step up is the same percentage.

20 boats by year built · asking prices in £ thousands, in today's prices · listed since Sep 2023 · asking, not sold · log scale · middle line fitted on 20 boats
20 boats · fill in Your boat below to place yours on the field. 1 boat without a build year is not drawn.
02

Your boat

Estimated from the boats above. No email, no broker call.

Listed in
optional, in pounds
Gauge Estimate · Indicative
£132,500€154,500$176,500

Likely range £126,000€147,000$167,500 – £178,000€207,000$234,500

12 comparable boats built 2016–2022 · hours not given · all markets · asking, not sold

Add your asking price to see where it sits among boats like yours.

03

By year built

Median from five boats; middle half from ten. Below that we print nothing rather than a guess. Linked years have their own page with that year's boats. The spread is drawn on the field's logarithmic scale, in pounds.

YearBoatsMedianMiddle halfSpread
20241—too few boats
20230—none listed
20223—too few boats
20211—too few boats
20202—too few boats
20191—too few boats
20182—too few boats
20172—too few boats
20161—too few boats
20152—too few boats
20141—too few boats
20132—too few boats
2010–20120—none listed
20091—too few boats
20081—too few boats

Across boats built 2008 to 2024, each year of age takes about 9.1% off the asking price.

04

What moves the price

Each factor compares boats of the same age, so a newer boat's premium isn't counted twice. Five boats or more on each side, or we say so.

Age

Each year of age takes about 9.1% off the asking price.

−9.1%per year of age · fitted on 20 boats
Other factors

Too few boats to compare factors yet: we need five on each side of a split.

—engine hours, VAT, where it's listed, engines, fuel and hull, each age for age

Asking prices, not sold. Factors can overlap, so treat these as a guide to what the market asks, not a formula.

05

Time to sell

26days

listed so far: the median of 18 boats seen on two or more dates

5.9%

have cut their asking price: 1 of 17 boats seen at least 14 days apart

—

median size of a cut · withheld: fewer than five cuts to measure

These are asking prices, and asking is not selling. Days listed so far is not time to sell: a boat still listed has not sold, and we do not yet record when a listing ends. We have not measured how far sale prices land below asking; the methodology says what we can and cannot measure.

06

Cost to keep

A year on a South Coast marina berth, insured at the Gauge Value, in pounds. An estimate from published rates, not a quote.

Depreciation£11,4509.1% a year of age on the fitted curve, at the Gauge Value
Berthing£5,000annual band for the region, Lake Yard marina berth, 8-10 m; Marina berth, South Coast · Lake Yard price list 2026 · BerthFinder
Maintenance and repairs£4,4002% to 5% of a value of £126,000 a year (maintenance, newer boats) · Boatsetter
Lift-out and antifoul£4509.4 m at the cited rate per metre (Lake Yard: lift, hold, pressure wash, relaunch, plus antifoul labour) · Lake Yard price list 2026
Insurance£1,2500.5% to 1.5% of a value of £126,000 a year · Velos Insurance; Admiral Yacht Insurance
Engine servicing—not estimated: labour rates are cited, but no source publishes the hours a service takes
A year of ownership£22,550 £1,880 a month

Fuel is not included: no cited source gives the engine hours a typical owner runs in a year.

08

Questions about the Formula 310 Bowrider

How much is a used Formula 310 Bowrider worth?

The median asking price is £126,000, from 21 boats listed since Sep 2023, in today's prices; half sit between £86,000 and £179,000. Each year of age takes about 9.1% off. For a specific boat, use Your boat above.

How long does a Formula 310 Bowrider stay on the market?

We do not measure time to sell yet. Across 18 boats seen on two or more dates, the median time between first and last sighting is 26 days so far. 5.9% of 17 boats seen at least 14 days apart have cut their asking price.

How fast does a Formula 310 Bowrider lose value?

About 9.1% of its asking price for each year of age, fitted on 20 boats built 2008 to 2024. On a boat at the median that is about £11,450 a year.

Are these sold prices?

No. They are asking prices observed on public listings, restated at today's market level. We have not yet measured how far sale prices land below asking, so we do not publish a figure for it.

09

About the Formula 310 Bowrider

The boats behind this page were built between 2008 and 2024 and have been listed since Sep 2023, most often in the US market. 5.9% of the boats seen at least 14 days apart have cut their asking price.

How we measure: we read public listings from brokers and marketplaces, count a boat once when it appears on several sites, store its asking price each time it changes, and restate older asking prices at today's market level. We never republish a listing, a photograph or a seller. Every figure is recomputed nightly and dated; below five boats we publish nothing. The 21 boats here were listed in the US. Full methodology

Length overall
9.45 mfrom listings · 18 boats
Beam
2.90 mfrom listings · 20 boats
Draft
0.94 mfrom listings · 11 boats
Built
2008–2024from listings · 20 boats
Type
Motor boatour classification