The Jet A diesel DA40 NG against the Cessna 172 Skyhawk, modern efficiency and range against the best-known four-seat trainer.
The DA40 is the better travelling aeroplane on fuel use, range and cabin visibility, provided a nearby shop actually supports the Austro engine and Jet A is convenient where you fly. The 172 is the safer ownership decision when the aeroplane will train, rent or change hands often, because instructors, parts, mechanics and buyers already understand it. Its shorter-field advantage also matters more than cruise on a local mission. A school with high utilisation can earn the Diamond's efficiency; a private owner flying modest hours may never recover the operational friction. Local support should decide this before the spreadsheet does.
The table below uses the same versioned PlaneFit dataset as the Finder. Prices and operating costs are planning estimates, not quotations.
Choose the DA40 NG when regular cross-country use makes Jet A availability and fuel efficiency valuable, and only after confirming that an Austro-qualified maintenance path is practical from the home base. Its visibility and modern systems make sense when the aircraft is more than a circuit trainer.
Choose the 172S when dispatch depends on broad instructor, rental, parts and maintenance familiarity. It is the more defensible fleet or first-owner choice when local support, predictable training continuity and a straightforward resale market matter more than extracting extra touring performance.
Neither is suitable when the routine mission requires four adults, meaningful baggage and long reserves at the same time. That load case should move the search to a higher-payload single instead of forcing either four-seat label to do work its weight-and-balance sheet may not permit.
Published performance describes reference conditions and specific configurations. PlaneFit does not know the empty weight, installed options, engine condition or local labour and parts lead times of the aircraft being considered; verify those before treating the operating comparison as a purchase case.
| Decision factor | Diamond DA40 NGView aircraft profile | Cessna 172S Skyhawk SPView aircraft profile |
|---|---|---|
| Typical market year | 2026 | 2019 |
| Estimated purchase | €601k | €497k |
| Annual cash cost at 80 h | €36k | €32k |
| Five-year cash outlay | €781k | €655k |
| Cruise speed | 145 kt | 124 kt |
| Advertised range | 934 nm | 640 nm |
| Seats | 4 | 4 |
| Realistic payload | 349 kg | 301 kg |
| Runway need | 590 m | 497 m |
| Landing gear | Fixed tricycle | Fixed tricycle |
| Ratings and endorsements | None beyond the certificate | None beyond the certificate |
| Data confidence | Normalized for direct comparison | Normalized for direct comparison |
| Main trade-off | Exceptional fuel efficiency and modern avionics, but rear-seat loading and diesel-engine support require careful mission and maintenance planning. | Exceptionally easy to support and resell, but four adults with bags and meaningful fuel are usually unrealistic. |
A factual first pass. Mission, condition and configuration can outweigh a brochure advantage.
They do not cross. The Cessna 172S Skyhawk SP is the cheaper of the two at every utilisation from zero to 300 hours a year, on purchase and running cost together, so there is no break-even point to find. That is worth knowing plainly: on cost alone this is not a trade-off, and the case for the other aircraft has to be made on mission, cabin, speed or access rather than on eventual savings.
| Five-year cash, including purchase | Diamond DA40 NG | Cessna 172S Skyhawk SP | Difference |
|---|---|---|---|
| 40 h / year | $811k (€751k) | $671k (€621k) | $140k (€130k) to Cessna 172S Skyhawk SP |
| 100 h / year | $860k (€796k) | $726k (€672k) | $134k (€124k) to Cessna 172S Skyhawk SP |
| 200 h / year | $941k (€871k) | $818k (€757k) | $123k (€114k) to Cessna 172S Skyhawk SP |
The gap narrows as utilisation rises, which is the part a headline price comparison hides. Every figure uses the same planning model as the rest of the site: indicative market prices, a fixed annual base and a direct hourly cost, before financing, depreciation and tax.
Advertised range is a still-air, best-case number. With 4 people aboard and realistic reserves, plan on about 626 nm from the Diamond DA40 NG against 429 nm from the Cessna 172S Skyhawk SP. On a return trip without refuelling, that is the radius that decides which destinations are on the list at all.
Against the 28,815 airports in the PlaneFit database that publish a runway length, the Diamond DA40 NG has enough runway at 25,104 of them and the Cessna 172S Skyhawk SP at 26,749, comparing each aircraft’s take-off requirement of 1,936 ft and 1,631 ft against the longest runway on the field.
This is a planning comparison, not a statement that any particular operation is legal or advisable. It ignores surface, slope, elevation, temperature, obstacles and how heavily the aircraft is loaded, all of which extend the requirement. It also compares take-off distance only: landing distance is frequently the binding constraint and PlaneFit does not hold approved landing distances, so a field in these counts is not necessarily a field you can get back out of, or into.
Nothing separates them here. Neither carries an endorsement or rating requirement of its own beyond a pilot certificate for the category and class.