DA40 NG vs Seminole
The Seminole leads, topping 5 of 7 compared metrics.
Put the Diamond Aircraft DA40 NG (introduced 2000) beside the Piper Aircraft Seminole (introduced 1978) and the trade-offs sharpen fast. Both are trainers, which makes them natural cross-shopping rivals. On paper they are closely matched, so the decision usually turns on cabin, economics and availability. We line the numbers up below, then translate them into the mission each aircraft actually wins.
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DA40 NG vs Seminole: the key differences
- The Seminole delivers 2% more range (DA40 NG: 900 nm; Seminole: 920 nm).
- The Seminole delivers 14% more cruise speed (DA40 NG: 147 kt; Seminole: 168 kt).
- The DA40 NG and Seminole are evenly matched on passenger capacity, both at 4 seats.
- The DA40 NG is the newer design (introduced 2000 versus 1978 for the Seminole), a gap of 22 years that usually shows up in avionics, cabin systems and fuel burn.
- The Seminole is the larger aircraft by maximum takeoff weight (3,800 lbs versus 2,535 lbs), which typically buys more cabin and payload at the cost of higher trip economics.
- The two differ in powerplant layout: the DA40 NG runs 1 engine against 2 on the Seminole — a factor in redundancy, maintenance scope and operating cost.
Which mission suits which aircraft
Both aircraft are built for short-haul and regional hops, so outright range rarely separates them — the call leans on cabin (the DA40 NG seats more), trip economics and what is actually available on the market. Match the airframe to how you fly most weeks, not to the headline range figure.
Which should you choose?
Choose the Seminole when nonstop range is the deciding factor, and the DA40 NG when cabin capacity and payload matter more; the Seminole holds the cruise-speed edge. The right answer ultimately depends on acquisition cost, maintenance-program status, and what is actually available on the market — talk to our acquisition advisory team to pressure-test the choice against your missions and budget.
More comparisons
DA40 NG vs Seminole: FAQs
Which has the longer range, the DA40 NG or the Seminole?
The Seminole has the longer published range — 920 nm versus 900 nm for the DA40 NG.
Which is faster, the DA40 NG or the Seminole?
The Seminole cruises faster, at 168 kt versus 147 kt for the DA40 NG.
Which is newer, the DA40 NG or the Seminole?
The DA40 NG is the newer design, introduced in 2000 versus 1978 for the Seminole.
Is the DA40 NG or the Seminole the larger aircraft?
By maximum takeoff weight the Seminole is the larger aircraft — 3,800 lbs versus 2,535 lbs for the DA40 NG.
Should I buy the DA40 NG or the Seminole?
Choose the Seminole when nonstop range is the deciding factor, and the DA40 NG when cabin capacity and payload matter more; the Seminole holds the cruise-speed edge. The right answer ultimately depends on acquisition cost, maintenance-program status, and what is actually available on the market — talk to our acquisition advisory team to pressure-test the choice against your missions and budget.
Still weighing up the DA40 NG vs Seminole?
Specs only take you so far. Our advisors give an independent recommendation based on your mission, budget and how you actually fly — and represent your side through to purchase.