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Last of ML was 2015. GLE has extended chassis W166 vs. W166X. Like RX350 vs. RX350L
I now drive 2015 ML550. GLE lost some options ML used to have. engine is M278. in
comparison 2015 RX-450h I had feels like a tin can. IMO, Mercedes exceeds both Audi
or BMW in safety department.
Its not just about airbags, its about the structure of the car, its ability to dissipate crash forces, etc. It may totally be that sometimes an accident is so severe there is no surviving it, but you just never know.
Never knowing, wouldn't it better the more safety device, the better chance of survival? I notice my current SUV has air bags even in the ceiling.
Weight of Ford truck was much heavier than the Sienna van(BOF vs. unibody). In this case according to law of physics van did not have a chance. Accident
reconstruction will reveal something.
Total energy is speed x weight. If speed was same heavier one wins in head on crash.
All else equal, that is correct, but weight alone is not always the deciding factor. How a vehicle is designed, and its general crashworthiness, also plays a role. Today's 3000-lb. compacts (C-class vehicles), for example, in a number of ways (not necessarily all) are generally safer than the old 5000-lb full-size luxury cars of the 50s and 60s, before safety regulations became commonplace. Of course, as you note, the head-on crash is probably the most severe one of all, and weight can be a significant factor.
This is the equation for kinetic (moving object) energy:
Where:
Ek = kinetic energy
m = mass (weight)
v = velocity (speed)
Energy is directly proportional to mass but proportional to the square of velocity. So for every doubling of mass, energy doubles, but for every doubling of velocity (twofold increase), energy increases fourfold.
Yes, today's compact cars are structurally much stronger than cars of 50 years ago; but all cars in all weight classes have increased in structural strength, so you are still warned against crashing your modern 3000 lb compact car into an equally-modern 5000 lb mid-size car and hope to come out equal to the guy in the mid-size car.
Yes, today's compact cars are structurally much stronger than cars of 50 years ago; but all cars in all weight classes have increased in structural strength, so you are still warned against crashing your modern 3000 lb compact car into an equally-modern 5000 lb mid-size car and hope to come out equal to the guy in the mid-size car.
Haven't you heard ......all one has to do today, to avoid a crash, is keep looking at one's texting-device or cell-phone. There's something magic about them.....they will protect you from anything LOL.
07-11-18, 04:40 AM
......all one has to do today, to avoid a crash, is keep looking at one's texting-device or cell-phone. There's something magic about them.....they will protect you from anything LOL.
