Diamond DA40 NG vs Diamond Twin Star

Side-by-side specs, range, and real operating costs for up to 5 aircraft.

Aircraft

Search for an aircraft above to begin your comparison.

Mission Performance

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Values normalised across compared aircraft. Fuel Economy is inverted (lower burn = higher score). See table below for raw figures.

Mission Performance Details

Metric Diamond DA40 NG Diamond Aircraft Industries Diamond Twin Star Diamond Aircraft Industries
Stall Speed 54 kts 67 kts
Approach Speed 71 kts 85 kts
Cruise Speed 154 kts 175 kts
Range 940 nm 1,215 nm
Service Ceiling 16,400 ft 18,000 ft
Rate of Climb 690 fpm 1,550 fpm
Fuel Burn 5.1 gph 10.4 gph

Flight Profile

Service ceiling, range, and climb rate.

Tap legend to isolate

Arc represents the climb-cruise-descent profile based on published service ceiling and range. Climb rate annotated on ascent. FL180 (18,000 ft) shown for reference.

Fuel Burn & Range

Range, endurance, and what the fuel costs by the hour.

Diamond DA40 NG Jet A
5.1 gph
baseline
940 nm range 39 gal usable 7h 38m endurance 30.2 nm/gal $31 fuel/hr
Diamond DA40 NG: 5.1 gallons per hour at cruise, 940 nautical mile published range, 7 hour 38 minute endurance, 30.2 nautical miles per gallon.
Diamond Twin Star Jet A
10.4 gph
+5.3 gph
1,215 nm range 76 gal usable 7h 18m endurance 16.8 nm/gal $62 fuel/hr
Diamond Twin Star: 10.4 gallons per hour at cruise, 1,215 nautical mile published range, 7 hour 18 minute endurance, 16.8 nautical miles per gallon.
Jet A range each cell = 1 hr of cruise · width scales with speed

Bars show published still-air range. Endurance is usable fuel divided by the published cruise burn. Estimates only. Always verify against the POH.

Runway Performance

Density altitude adjusted estimates

Outside Air Temp
0°F57°F115°F
Field Elevation
SL4,0008,000 ft
Density Altitude

Takeoff over 50 ft obstacle

Landing ground roll

Base distance DA penalty
Scale: 6,000 ft

FAA 10%/1,000 ft DA rule of thumb (FAA-H-8083-25B). Turboprops and jets are less sensitive in practice. Always verify against the POH.

Estimated Operating Costs

Scale:
Diamond DA40 NGJet A
$115 /hr
Diamond DA40 NG: $115 per flight hour — fuel $31, maintenance and reserve $84.
Diamond Twin StarJet A
$135 /hr
Diamond Twin Star: $135 per flight hour — fuel $62, maintenance and reserve $73.
Diamond DA40 NG Piston
$14,236 /yr
Diamond DA40 NG: $14,236 per year — insurance $5,300, hangar $6,811, annual inspection $2,125.
Diamond Twin Star Piston
$22,088 /yr
Diamond Twin Star: $22,088 per year — insurance $11,000, hangar $8,088, annual inspection $3,000.

Estimates only. Costs vary by location, pilot profile, and market conditions. See individual aircraft pages for source notes.

Capability & limits

Each bar stacks your selected occupants against full fuel and the aircraft's useful-load limit (the black line). The open gap between them is spare payload. Add an occupant and the gap closes; once it's gone, fuel has to give.

190 + 30 lb Occupants
×
1
Diamond DA40 NG
4 / 4 seats 39 / 39 gal fuel 643 lb wet payload 904 lb useful 2,888 lb MTOW
Diamond Twin Star
4 / 4 seats 76 / 76 gal fuel 790 lb wet payload 1,299 lb useful 4,407 lb MTOW

Occupants at 190 + 30 lb each. Fuel at 6.7 lb/gal jet-A, 6.0 lb/gal avgas.

Dimensions & configuration

Representative planforms, drawn to shared scale.

Diamond DA40 NG
38.2 × 26.4 ft 6.5 ft tall
1× Piston Fixed Unpressurized
Diamond Twin Star
44.3 × 28.1 ft 8.2 ft tall
2× Piston Retractable Unpressurized

Payload-Range Map

Full fuel ← → Max payload

Origin: · two fingers to move map

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