Plane and Pilot listed a new DA42 at $749,800 in 2017, and we could not find a current Diamond price. Today the used market straddles that number: the median DA42 NG in our sample asks $701,000, 93% of the 2017 figure, and the newest DA42-VI asks a median of $1,016,500.
The DA42 is a two-engine diesel four-seater, and it is a small market: 264 aircraft on the FAA register, the smallest family on this site. The sample behind the used prices is small too, so the figures below are snapshots, and the page says so wherever it matters.
What follows looks at the used market, the family, who owns the fleet, what the airplane costs to run and what the NTSB accident files record. Every figure comes from a named public source or a dated sample, and the sources are listed at the end.
Data used: FAA fleet through 2026-10-12; NTSB file through 2026-09-30; asking-price sample 2026-10-14.
What a new DA42 costs: no current number
Diamond's current price list was not available to us, and the maker's tech specs page publishes no price. The most recent dated figure we could verify is Plane and Pilot's 2017 table, which lists the DA42 at $749,800. It is a reference, not a quote. Ask a Diamond dealer for a current price with the equipment you want.
The FAA's type certificate data sheet covers the DA 42 from 2005 and the DA 42 NG from 2010. The DA 42 has 2 engines, both diesel, a maximum takeoff weight of 3,748 lb and 50 US gal of usable fuel. The DA 42 NG has 2 engines, both Austro Engine E4 diesels, and a maximum takeoff weight of 4,189 lb, which is 441 lb more.
Two generations, two price levels
We gathered 26 DA42 listings from one marketplace on 14 October 2026, and 14 of them carried a usable asking price: 12 said to call for the price. That is a very small sample, and a single listing can move a median.
The gold bar is the 2017 Plane and Pilot price, not a current list price. Teal bars are medians of asking prices. Groups with fewer than 5 priced listings are left out.
The DA42-VI asks a median of $1,016,500 on 6 listings, from $860,000 to $1,331,000, 1.36 times the 2017 price, and its median airframe has flown only 369.5 hours. The DA42 NG asks $701,000 from $639,000 to $930,000, with a median of 1,815.5 hours.
The median DA42-VI in our sample has flown 369.5 hours. The median NG has flown 1,815.5.
The earlier DA42 and DA42 TDI labels have only 2 priced listings, asking $628,000 to $675,000, too few for a median. One caution covers this whole section: it is one marketplace on one day, these are asking prices, not sales, and no individual listing is published. Prices were recorded to the nearest 1,000 dollars.
For the wider market, our guide to what a small plane costs puts the DA42 in context, and what Diamond aircraft cost covers the maker. The single-engine sibling is covered in what a Diamond DA40 costs, and the other light twin on this site in what a Beechcraft 58 Baron costs.
Show the asking-price table
| Model or band | Listings | Asking median (USD) | Asking range (USD) | Median total time (hours) | Sample years |
|---|---|---|---|---|---|
| DA42 and DA42 TDI | 2 | Range only | $628,000 to $675,000 | Not shown | 2007 to 2008 |
| DA42 NG | 6 | $701,000 | $639,000 to $930,000 | 1,815.5 | 2006 to 2022 |
| DA42 VI | 6 | $1,016,500 | $860,000 to $1,331,000 | 369.5 | 2018 to 2027 |
A twin built on diesels
The sheet lists the DA 42 and the DA 42 NG, and the register holds the DA42-VI and other labels the sheet does not name separately. The DA 42 NG approval is the one that carries the E4 engine. For where the DA42 sits among the rest, the guide to the main types of planes helps.
- 2 engines, both diesel
- 3,748 lb maximum takeoff weight
- 50 US gal usable fuel
- 2 engines, both Austro Engine E4 diesels
- 4,189 lb maximum takeoff weight
- 50 US gal usable fuel
The register splits the family between the DA42 label, with 114 aircraft (43.2%), and the DA42 NG, with 147 (55.7%). The sheet does not state horsepower for these models in the rows we could read, so this page prints none.
Show the full model comparison table
| Model and approval year | Certified specification | Ownership context |
|---|---|---|
| DA 42Approved: 2005 FAA sheet | Technify Motors GmbH TAE 125-01 or TAE 125-02-99 or TAE 125-02-114 The aircraft section does not state horsepower. 2 enginesMaximum takeoff weight: 3,748 lbFuel, total / usable: 52 US gal / 50 US galSeating: 4 seats | Registered: 114 all registrations; 112 valid (status V)Asking median: Not shown for this designationPrimary engine TBO: No applicable primary schedule retrieved |
| DA 42 NGApproved: 2010 FAA sheet | Austro Engine E4 The aircraft section does not state horsepower. 2 engines 123.5 kW per engineMaximum takeoff weight: 4,189 lbFuel, total / usable: 52 US gal / 50 US galSeating: 4 seats | Registered: 147 all registrations; 146 valid (status V)Asking median: Not shown for this designationPrimary engine TBO: No applicable primary schedule retrieved |
| DA 42 M-NG DA42MNGApproved: 2010 FAA sheet | Austro Engine E4 The aircraft section does not state horsepower. 2 engines 123.5 kW per engineMaximum takeoff weight: 4,189 lbFuel, total / usable: 52 US gal / 50 US galSeating: 4 seats | Registered: 3 all registrations; 3 valid (status V)Asking median: Not shown for this designationPrimary engine TBO: No applicable primary schedule retrieved |
A small fleet held by companies
The FAA register lists 264 aircraft in the DA42 family, and 261 of them (98.9%) hold a valid registration, while 3 carry another status. Of the whole family, 236 records have a usable build year, and 233 of those are valid. That counts paperwork, not airplanes in the air: a valid registration says nothing about whether the aircraft is airworthy or flying.
- 1172000s
- 482010s
- 712020s
28 records have a blank or invalid build year and are left out of the chart.
The 2000s account for 117 aircraft and the 2010s for 48, while the 2020s have already reached 71.
LLCs hold 56.4% of the register and corporations 29.2%. Individuals hold only 4.2%. The registry records the owner category, not how the airplane is used, but a company or LLC owning a twin diesel usually means a training operator or a business.
Florida (18.2%) holds the most registrations, 30 more than Arizona, which ties California with 18 (6.8%). Indiana follows. The state field is the registrant's address, not where the aircraft fly.
Download the fleet CSV by model and build year. Free to use, please link back. It counts all registrations and valid ones (status V) by model label and build year, including blank years, and contains no personal records.
Show the fleet tables
| Group | All registrations | Valid (status V) | Share of all registrations |
|---|---|---|---|
| DA 42 registry labels | 114 | 112 | 43.2% |
| DA 42 NG registry labels | 147 | 146 | 55.7% |
| DA42M registry label | 0 | 0 | 0.0% |
| DA42MNG registry label | 3 | 3 | 1.1% |
| Model label | All registrations | Valid (status V) |
|---|---|---|
| DA 42 NG | 147 | 146 |
| DA 42 | 114 | 112 |
| DA42MNG | 3 | 3 |
| Build decade | All registrations | Share of known years | Valid (status V) | Valid share of known years |
|---|---|---|---|---|
| 2000s | 117 | 49.6% | 115 | 49.4% |
| 2010s | 48 | 20.3% | 48 | 20.6% |
| 2020s | 71 | 30.1% | 70 | 30.0% |
| FAA code | Registrant type | All registrations | Valid (status V) | Share of all registrations |
|---|---|---|---|---|
| 1 | Individual | 11 | 10 | 4.2% |
| 2 | Partnership | 1 | 1 | 0.4% |
| 3 | Corporation | 77 | 77 | 29.2% |
| 4 | Co-Owned | 5 | 5 | 1.9% |
| 5 | Government | 11 | 11 | 4.2% |
| 7 | LLC | 149 | 149 | 56.4% |
| 8 | Non Citizen Corporation | 10 | 8 | 3.8% |
| 9 | Non Citizen Co-Owned | 0 | 0 | No records |
| State | All registrations | Valid (status V) | Share of all registrations |
|---|---|---|---|
| FL | 48 | 47 | 18.2% |
| AZ | 18 | 18 | 6.8% |
| CA | 18 | 18 | 6.8% |
| IN | 16 | 16 | 6.1% |
| TX | 14 | 14 | 5.3% |
| NY | 11 | 11 | 4.2% |
| OH | 11 | 11 | 4.2% |
| DE | 9 | 9 | 3.4% |
| NC | 9 | 9 | 3.4% |
| CO | 8 | 8 | 3.0% |
Show every exact FAA model label
| Model label | All registrations | Valid (status V) |
|---|---|---|
| DA 42 NG | 147 | 146 |
| DA 42 | 114 | 112 |
| DA42MNG | 3 | 3 |
| Total | 264 | 261 |
The list price is only the entry fee
After the purchase the airplane wants fuel, a fund for two engines, an annual inspection, insurance and somewhere to sleep. Only some of those have a published number worth printing.
Fuel
Diamond's own configuration data gives the DA42-VI 10.4 US gal/hour, which Diamond also states as 39.4 l/hour, at 60 percent power, and Diamond states that as the total for both engines. It is one configuration at one power setting, not the family, so the calculator leaves fuel burn for you to fill in. Diesel fuel has a different price from avgas, so price it with your own quotes.
The engines
The sheet names diesel engines from Technify Motors, the TAE 125-02-99 family, on the earlier DA 42, and the Austro Engine E4 on the DA 42 NG. We could not retrieve the makers' current overhaul intervals, so we publish none for either. The engine fund is the line item that arrives all at once, and a twin has two.
The rest
The FAA describes an annual inspection interval of 12 calendar months for ordinary US personal aircraft ownership. Insurance, hangar or tie-down fees, labour rates and loan terms depend too much on the owner, the airfield and the airplane for one published number to mean anything, so this page prints none. Add your own quotes and you have a budget that belongs to you. More on the wider costs of owning an aircraft sits in our ownership section.
Renting is the benchmark your own figure has to justify. Our guide to how much it costs to rent a Cessna 172 shows the other side of the ledger for a single-engine airplane.
What the accident files record
Every entry in the NTSB files is a real event, and the counts are all this page claims to know about them. The NTSB lists 20 accidents involving DA42-family aircraft from 2000 through 2025. 1 of them was fatal, 5.0% of the record, and 1 person died. The airplane has only existed since 2005, and the fleet is small.
- 2000
- 2005
- 2010
- 2015
- 2020
- 4
- 02025
Counts only. The NTSB does not record how many hours the family flew, so these bars are not rates.
The highest yearly count is 4, in 2022. With numbers this small, no trend should be read into them, and the data holds no flying hours to divide by.
The first coded phase is the one attached to the first event in the NTSB's sequence for each accident. Accidents without a coded sequence, or with unmapped codes, sit in separate rows of the full table.
Landing begins 9 of the 20 accidents, 45.0% of the record, and taxiing 3.
Of the 16 accidents with causal findings in the NTSB's current coding, 75.0% involve personnel issues and 68.8% involve aircraft issues. An accident can carry several findings, so the shares overlap and do not add up to the whole.
Show the NTSB tables
| Year | Accidents | Fatal accidents |
|---|---|---|
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 2 | 0 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 3 | 0 |
| 2022 | 4 | 1 |
| 2023 | 1 | 0 |
| 2024 | 4 | 0 |
| 2025 | 0 | 0 |
| Phase of flight | Accidents | Share of all accidents |
|---|---|---|
| Landing | 9 | 45.0% |
| Taxi | 3 | 15.0% |
| Enroute | 2 | 10.0% |
| Approach | 1 | 5.0% |
| Emergency or uncontrolled descent | 1 | 5.0% |
| Initial Climb | 1 | 5.0% |
| Maneuvering | 1 | 5.0% |
| Prior to Flight | 1 | 5.0% |
| Takeoff | 1 | 5.0% |
| Total | 20 | 100.0% |
| Group | Accidents | Share of all | Share of coded subset |
|---|---|---|---|
| Aircraft | 11 | 55.0% | 68.8% |
| Personnel issues | 12 | 60.0% | 75.0% |
| Environmental issues | 3 | 15.0% | 18.8% |
| Not determined | 3 | 15.0% | 18.8% |
| Group | Accidents | Share of all | Share of coded subset |
|---|
| Manufacture band | Accidents | Share of all |
|---|---|---|
| Year of manufacture 2005 to 2025 | 17 | 85.0% |
| Unknown year of manufacture | 3 | 15.0% |
| Family aircraft in different manufacture-year bands | 0 | 0.0% |
What to take from the numbers
- Expect a very small market. Our sample had 14 priced listings out of 26, and 12 said to call for a price.
- Pick the generation first. The median ask is $701,000 for the NG and $1,016,500 for the DA42-VI.
- Treat an asking price as an opening line. These are what sellers want. The sample cannot see what buyers pay.
- Get both engines' histories in writing. A twin diesel has two engines to maintain, and no listing summary replaces the records.
- Do not read a valid registration as a clean bill of health. Status V is paperwork, not an inspection.
Questions buyers ask
How much does a new Diamond DA42 cost?
We could not find a current Diamond price list. Plane and Pilot's 2017 table listed the DA42 at $749,800. Ask a dealer for a current quote.
How much does a used Diamond DA42 cost?
In a one-day sample of asking prices on Controller.com, the median ask was $701,000 for a DA42 NG and $1,016,500 for a DA42-VI. Those are asking prices, not sales, and the sample is very small.
How many Diamond DA42 aircraft are there?
The FAA register lists 264 aircraft in the DA42 family, 261 with a valid registration.
How many Diamond DA42 accidents has the NTSB recorded?
The NTSB files hold 20 accidents from 2000 through 2025, 1 of them fatal. These are counts, not rates, because flying hours by model are not published.
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Sources and how the numbers were made
Data through: FAA 2026-10-12; NTSB 2026-09-30; asking sample 2026-10-14.
How the numbers were made: We counted matching FAA registrations and showed valid registrations (status V) separately. We combined the NTSB files, counted each accident once and excluded incidents. Used prices are summaries of advertised prices. Fuel cost examples multiply published fuel burn by example fuel prices.
Privacy: No personal data is used in the published results. No owner, seller, crew, operator, narrative or individual accident record is published.
- Federal Aviation Administration. Releasable Aircraft Database. Retrieved 2026-10-13. The registry supplies fleet counts by model, build year, registrant type and state.
Source SHA-256:ad4497553c4b71a14e7a0768b2e9c66974998ced50177a963b7942eabc259dec - Federal Aviation Administration. Aircraft Registration Database Description. Retrieved 2026-10-13. This document explains registration status and registrant-type codes.
- Federal Aviation Administration. Pilot Handbook of Aeronautical Knowledge. Glossary. Retrieved 2026-10-13. The glossary explains the annual inspection interval.
Source SHA-256:210d7cebd33f4094af682b49cb83a93505bebfe3d22e7db4de25dbdaa5476140 - Diamond Aircraft Industries. DA42. Technical Specifications. Retrieved 2026-10-14. The current specification table gives total fuel consumption for both engines at the stated power setting.
- Plane and Pilot. 2017 Diamond DA42. Retrieved 2026-10-14. The dated specification table gives a historical base new aircraft price.
- National Transportation Safety Board. Aviation accident data: avall. Retrieved 2026-10-13. The later accident file supplies counts, fatal outcomes, phases of flight, findings and manufacture years.
Source SHA-256:bc74fefb1b39e1b86700a4be82b8ff6014bb1f6d81008524de73f2ddbd38b052
Database SHA-256:c891b8a6fe55651294a0cb0fa328e5648833caf5ac62b1c21d6caf3ea5e99bb7 - National Transportation Safety Board. Historical aviation accident data: Pre2008. Retrieved 2026-10-13. The historical accident file supplies earlier counts and its own phase and finding categories.
Source SHA-256:89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Database SHA-256:c2102e7e9f6773ab25c5564904db9b02d0a6d58ad8e73b3e9accda349ea85b9a - National Transportation Safety Board. Aviation data dictionaries. Retrieved 2026-10-13. Each file's dictionary defines the accident codes used here.
- National Transportation Safety Board. Aviation data download directory. Retrieved 2026-10-13. The directory gives the accident files' release dates.
- National Transportation Safety Board. Aviation database release notes. Retrieved 2026-10-13. The release notes explain file coverage and how causes and contributing factors are marked.
- National Transportation Safety Board. Aviation accident database query help. Retrieved 2026-10-13. The help page explains event dates, first phases, investigation status and limits on foreign investigations.
- National Transportation Safety Board. Aviation accident database. Retrieved 2026-10-13. The database page explains the geographic limits of these accident records.
- Federal Aviation Administration. General Aviation and Part 135 Activity Survey. Retrieved 2026-10-13. The survey reports flight hours by aircraft category, which cannot support a model accident rate.
- Federal Aviation Administration. Type Certificate Data Sheet No. A57CE. Retrieved 2026-10-14. The FAA sheet gives certified engines, ratings, weights, fuel capacities and seating for the covered models.
Source SHA-256:013f4d1aa66ac0f0370bf67ab93860f77ae69ab62cb129b91f6e58a7d9447800
Text SHA-256:6c1d48515c9236abdf6f57b2ef1d4fcdbdf9dc27954f607b0fce76f8a2d6db3b - Controller.com. Diamond DA42 aircraft for sale. Retrieved 2026-10-14. The advertised prices supply model medians, ranges and airframe hours for the dated sample.
Send corrections and a supporting source through the contact page. We check each correction against the source.