Four-seat composite single

What it costs to own a Diamond DA40

Diamond's alternative to the 172, and the fleet airplane at a number of career academies. Good visibility, light controls, and fuel burn that undercuts most of the class. The diesel NG variant runs on Jet-A, which matters more each year in markets where 100LL is getting harder to find.

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Diamond DA40 at a glance

Public manufacturer and POH figures, rounded to what owners see in practice. Your airframe will differ.

Engine

Lycoming IO-360 / Austro AE 300

180 hp gas, 168 hp diesel

Fuel burn

8–9 gph

5–6 on the diesel NG

Cruise

125–140 KTAS

Useful load

800–900 lbs

Seats

TBO

2,000 hrs

diesel differs

What it costs to run

Starting numbers for a Diamond DA40, with the two figures that vary most between owners left editable. Change either one and the totals update.

Use your own numbers

Fuel and hangar vary more between owners than anything else. The rest holds at the Diamond DA40 baseline.

100LL price ($/gal)

At 8.5 gph, that is $55.25 an hour in fuel.

Hangar or tiedown ($/yr)

$467 a month.

Fixed (annual)

$13,200

Hangar, insurance, annual, reserves

Typical range $11,000–$18,000

Variable / hour

$87

Fuel, oil, maintenance reserve

Typical range $70–$95

All-in / hour

$219

Fixed plus variable, at 100 hrs/year

Typical range $180–$275

Need financing in the number? the cost-of-ownership calculator takes a purchase price, down payment, and loan terms, and lets you change utilization and every reserve line as well.

Common ownership patterns

How Diamond DA40 owners usually split the airplane. Each one changes the cost math, the scheduling problem, and what needs to be written into the agreement.

Academy fleet

Career programs run DA40s in numbers, often alongside a G1000 standardization.

Owner-flyer

Composite, side stick, and a fuel bill that stays small.

Jet-A operator

The NG matters where avgas supply is unreliable or priced badly.

Run the split in the partnership calculator, and for the agreement itself see the co-ownership guide.

Maintenance worth knowing about

Items that come up on this type specifically. Worth having in hand at a pre-buy and at every annual.

Composite airframe, so shop selection matters more than it does on a Cessna.
The diesel NG follows a different maintenance schedule than the Lycoming airplanes.
Glass-equipped DA40s are usually G1000, which brings database subscriptions with it.
Resale holds up well in markets where the type is already established, and less well where it is not.

Keep the due-dates straight: the free inspection due-date calculator covers the annual, 100-hour, ELT, transponder, and pitot-static, and the engine reserve calculator sizes what to set aside per hour for the overhaul. For a fleet, Aloft360 tracks all of it against actual Hobbs time.

Diamond DA40 FAQ

What does it cost to own a Diamond DA40?

Fixed costs — hangar, insurance, the annual, and reserves — run $11,000–$18,000 a year. Fuel, oil, and maintenance reserve add $70–$95 for every hour you fly. Put those together at 100 hrs/year and you land around $180–$275 an hour. Your own numbers will move with hangar rates, hull value, and how much you fly, so run them in the cost-of-ownership calculator.

What's the fuel burn on a Diamond DA40?

8–9 gph at typical cruise power (5–6 on the diesel NG). Treat that as a planning figure. Power setting, altitude, how you lean, and what you are carrying all change it.

How long is the engine TBO on a Diamond DA40?

2,000 hrs per the manufacturer (diesel differs). Divide the expected overhaul cost by hours-to-TBO and set that aside every hour, or the bill arrives all at once.

Who typically owns a Diamond DA40?

Part 141 academies, owners focused on fuel economy, and operators in markets where Jet-A is the practical choice.

Other aircraft

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Track your Diamond DA40 in Aloft360

Inspections, squawks, flight logs, per-owner hours, and expenses in one place. Starts at $9/month for one aircraft, with a 30-day free trial and no credit card.