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Glaring safety flaw in the XC90's design

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7.4K views 15 replies 15 participants last post by  Tostik  
#1 ·
The XC90 has one MASSIVE safety flaw: the vehicle is not designed to be crash-compatible with high riding vehicles (SUVs, pickups).

Pickups are 4 of the top 10 best selling vehicles in the USA. A pickup truck will override the XC90's safety cage and kill the occupants.

If Volvo had done it right, they would have included the type of front-end companies like Honda uses to ensure crash compatibility.

Note how the Volvo (top) completely lacks the upper crash structure. The crash-compatible vehicle (bottom) has a high bar which engages the higher-riding vehicle's crash structure, and transmits it to the lower crash structure.

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#2 · (Edited)
Your (inaugural) post is off base and lacks substance.

You would be a lot more respected if you divulged your true motivations in trying to denounce a manufacturer that has made its mission to save people's lives.

Not sure if you work for Honda or at a Honda dealer but, apparently, you are doing the same in other forums, proclaiming Honda is the best thing since sliced bread:

http://forums.vwvortex.com/showthre...497971-Why-are-Honda-manual-transmissions-so-much-better-than-most-other-makers

I also know you are active in the Acura and/or MDX forums but your post above is unsubstantiated.

By the way, thank you for giving us the schematics of the Honda/Acura SUV; I see a lot less orange, yellow and especially red (ultra high strength steel) in the critical areas of the car, especially the sides (Honda Blue or softer steel rules...).
 
#11 · (Edited)
Honda and Acura have a fatal flaw in their vehicles in that they use Takata airbags which inflate using highly unstable ammonium nitrate as a propellant.
The airbag explodes shooting shrapnel towards it occupants.
Interstingly, due to lack of availablity (costs) recalled Honda vehicles utlized the same unstable ammonium nitrate airbags, which means they will need to be recalled again in the future.

Other safety hazards are its VCM (Vehicle Cylinder Management) in which their 1/2 the of the V6 or 4cylinders engines are shut off in order to meet MPG standards.
Shutting of 1/2 of the cylinders makes the engine terribly unbalanced causing the car to vibrate at idle, or worse at 40+mph.
Their cheap solution was to mount the engine on shock absorbers and use noise cancellation in the cabin to counteract the vibrating engine.

If Honda had done it right they would have used guanidine nitrate (yea costs more $) in their airbag inflators, and turbos and superchargers to make a fuel efficient yet powerful engine.
 
#12 · (Edited)
Very interesting first post.....way to get started on the right foot!!!! Now you have me thinking, maybe I should cancel my OSD for May and go buy a Honda....... LOL
 
#14 · (Edited)
The available data does not support the assumption that the XC90 II has a "massive safety flaw".

It is impossible to determine the level of safety (or lack thereof) a modern unibody structure provides in a collision just by looking at it. A lot of thought and research is needed to construct a save car. In many cases there is more than one method that can be used to build a crumple zone and safety cell. Direct comparisons between different construction methods need to be based on their real world performance, not material usage percentages.
A car made completely from boron steel would crumple very little in an accident which is very godd if you want your safety cell to only be scratched in an accident. Very likely such a car would also kill the occupants in nearly every crash because nothing else is there to absorb the energy from the crash.

As for the Honda Pilot ('16 MY) and XC90 II ('16 MY) crash compatibility with a higher riding vehicle:
18,6 cm ground clearance for the Honda
23,8 cm ground clearance for the Volvo (conventional suspension)
22,7 cm ground clearance for the Volvo (air suspension, lowest setting)
26,7 cm ground clearance for the Volvo (air suspension, highest setting)

For comparison a Ford F-150 ('16 MY) and a Dodge Ram 1500 ('16 MY):
21,3 cm ground clearance for the F-150 (SuperCrew Cab, lowest measurement given)
23,9 cm ground clearance for the F-150 (SuperCrew Cab, highest measurement given)

22,1 cm ground clearance for the Ram 1500 (regular cab, 4x2, lowest measurement given)
23,9 cm ground clearance for the Ram 1500 (Crew Cab, highest measurement given)

Seems unlikely that the crumple zone of the Volvo will be overridden. Also at some point it will be impossible to engineer a solution for everything without compromising looks, fuel economy, cost(s), pedestrian safety and a bunch more things.

Sources:
http://automobiles.honda.com/pilot/specifications.aspx (Honda)
https://www.media.volvocars.com/global/en-gb/models/all-new-xc90/2016/specifications (Volvo)
http://www.ford.com/trucks/f150/specifications/view-all/ (Ford)
http://www.ramtrucks.com/model-compare/detailed-chart/?modelYearCode=CUT201613 (Dodge)
 
#15 ·
The available data does not support the assumption that the XC90 II has a "massive safety flaw".

It is impossible to determine the level of safety (or lack thereof) a modern unibody structure provides in a collision just by looking at it. A lot of thought and research is needed to construct a save car. In many cases there is more than one method that can be used to build a crumple zone and safety cell. Direct comparisons between different construction methods need to be based their real world performance, not material usage percentages.
A car made completely from boron steel would crumple very little in an accident which is very godd if you want your safety cell to only be scratched in an accident. Very likely such a car would also kill the occupants in nearly every crash because nothing else is there to absorb the energy from the crash.

As for the Honda Pilot ('16 MY) and XC90 II ('16 MY) crash compatibility with a higher riding vehicle:
18,6 cm ground clearance for the Honda
23,8 cm ground clearance for the Volvo (conventional suspension)
22,7 cm ground clearance for the Volvo (air suspension, lowest setting)
26,7 cm ground clearance for the Volvo (air suspension, highest setting)

For comparison a Ford F-150 ('16 MY) and a Dodge Ram 1500 ('16 MY):
21,3 cm ground clearance for the F-150 (SuperCrew Cab, lowest measurement given)
23,9 cm ground clearance for the F-150 (SuperCrew Cab, highest measurement given)

22,1 cm ground clearance for the Ram 1500 (regular cab, 4x2, lowest measurement given)
23,9 cm ground clearance for the Ram 1500 (Crew Cab, highest measurement given)

Seems unlikely that the crumple zone of the Volvo will be overridden. Also at some point it will be impossible to engineer a solution for everything without compromising looks, fuel economy, cost(s), pedestrian safety and a bunch more things.

Sources:
http://automobiles.honda.com/pilot/specifications.aspx (Honda)
https://www.media.volvocars.com/global/en-gb/models/all-new-xc90/2016/specifications (Volvo)
http://www.ford.com/trucks/f150/specifications/view-all/ (Ford)
http://www.ramtrucks.com/model-compare/detailed-chart/?modelYearCode=CUT201613 (Dodge)
Wow, thanks for sharing......