1. DA42TDi with 135 HP Centurion engines
2. DA42NG with 168 HP Austro AE300 engines
3. DA42N-VI with Austro engines and a suite of aerodynamic cleanups

As with just about everything in aviation, there are tradeoffs between cost and performance, and what follows is drawn from the aircraft flight manuals for each aircraft.

Diamond is very good about publishing their AFM and maintenance/parts manuals online.  Here are links to the entire DA42 AFM

DA42NG

DA42N-VI

 

Just the cruise performance tables are here:
DA42NG Cruise Performance
DA42NG-VI Cruise Performance

These are conservative numbers which you should expect to meet at max gross weight.  At altitudes below 12,000:

• DA42NG-VI is 3 – 5 KTAS faster than DA42NG
• DA42NG is 10 – 15 KTAS faster than the DA42 TDi

 AT 16,000 and above, the gap widens:

• DA42NG-VI is 15 KTAS faster than DA42NG
• DA42NG is 15 – 18 KTAS faster than DA42 TDi

 

Altitude	VI 92% 8.1 GPH	NG-92% 8.1GPH	Tdi 90%  7.2GPH
2000	165	165	151
4000	168	167	154
6000	172	168	157
8000	175	171	160
10000	179	173	163
12000	182	174	162
14000	189	175	163
16000	191	174	156
18000	188	173	157

 

 

Great Lakes Diamond has sold more DA42NG aircraft than any other Diamond distributor. Our local Diamond Service Center, A&M Aircraft Services, maintains more than a dozen of the DA42 models.  We are the DA42 experts!  Let us help you choose the right plane for your mission.