I was searching last night and here is what i found on one of the russian website.
Carbonic oxide in interior of the car costing in water.

"Very rare in Russia, and all over the world the car (it is let out all 12 thousand pieces). As well as in the previous cases, we have involved this machine in the test not to define data of this model. It was more important to understand, that can be expected from cars of a similar class. Results have surprised us. The maintenance WITH in interior gradually increased and to last gauging exceeded maximum concentration limit in 7-8 times. It, certainly, harmfully, but to serious consequences the finding in a similar atmosphere will not result. By the way, high enough concentration of hydrocarbons has noted been also. But it was necessary to include the conditioner as maintenance ВВ in air of interior has there and then fallen up to zero. Conclusion is results Isuzu VehiCross have appeared far are not irreproachable. However, up to really dangerous figures still far enough."

here is original link http://www.off-road-drive.ru/index.php?link=161590





Vx is last car on left



They tested these cars
Jeep Cherokee
Nissan Patrol
Land Rover Defender
Nissan Titan
Isuzu VehiCross
UAZ-31622

If anyone interested hear relts about those other cars let me know i can translate and put it on here i will just say in UAZ-31622 after a couple minutes in water with closed windows you will die. So VX is pretty save car =)