General 4 Wheel drive comparison

Discussion in '4th Generation (2013-2017)' started by 155695, Friday 19th Feb, 2016.

  1. 155695 Premium Member Club Supporter

    England Keith Essex
    347
    164
    Loading...
  2. legend-ary Moderator Staff Team

    United Kingdom Legend The Big Smoke
    3,799
    2,257
    6


    Honda CR-V's 4WD system has been getting quite a bit of hammering in press lately.
     
    Loading...
    stuscrv likes this.
  3. stuscrv Valued Contributor ★ ★ ★ ☆ ☆

    Spain stu lanzarote
    463
    137
    Wow very interesting. I guess when they mention reprogramming it must be an electric system whereas mines mechanical ?
     
  4. 155695 Premium Member Club Supporter

    England Keith Essex
    347
    164
    I thought the problem with the rolling road shown in Legend's post had been sorted with a software upgrade - mind you the presenter in the video also said that Honda had indicated it had been sorted but perhaps not.

    Keith
     
    Loading...
  5. legend-ary Moderator Staff Team

    United Kingdom Legend The Big Smoke
    3,799
    2,257
    6
    Here is Honda's response to the test:

    REPLY FROM HONDA SWEDEN


    The Honda AWD system uses a compact, lightweight and fuel-efficient rear differential. The design requires a certain torque limitation for the device to be able to work effectively in real conditions, but at the same time, it must not exceed the total capacity of the AWD drive.
    In real conditions, regardless of the surface, there is a certain amount of friction always available for both front and rear wheels. The AWD system benefits therefore torque between front and rear wheels in order to achieve optimal driving force.

    In the roll test non-existent grip is simulated in the front and maximum grip at the rear.

    If all the available torque required to move the vehicle forward would be transferred to the rear differential then the limit for the torque of the unit would be exceeded.
    If the vehicle continues to run in this state (the front wheels spinning and the rear wheels standing still) the system senses the high speed variation and that the differential clutch slips and reduces the available torque to the rear wheels to prevent overheating. That is why the vehicle moves backward in the video.
    In real conditions a scenario like the roll test with such a high difference in grip between the front and the rear wheels is highly unlikely.
    In other words Honda does not see that the roll test fairly highlights CR-V’s AWD performance. Teknikens Värld has done a winter test where CR-V was tested on icy roads, as well as steep paths such as a ski slope.

    Honda believes that these tests in real environments should be enough to show that the CR-V is a great winter car and would like to stress that there are no known customer complaints on the CR-V’s traction from the Swedish market or in other markets with similar conditions.

    On Teknikens Värld’s question whether the update is made, we can with measuring instruments upon request show that for both customers and media.

    Since it is important for Honda that customers feel safe and have confidence in ourselves we did an update of the software of all CR-Vs for the Swedish market.

    CR-V customers were able to get the software, free of charge, updated at our dealers from April 15 and in production from July 8 in 2013.

    Honda CR-V is a global car and has sold over 5 million copies. It is the world’s best-selling SUV* and the sales in Europe is growing steadily, 6 percent in comparison with last year. The CR-V therefore has many satisfied customers around the world.
    Maria Johansson, head of communications


    However as many consumers pointed out, such a situation can happen if you encounter an icy patch shorter than a car's wheelbase when going up an incline.
    - - - Updated - - -
    It was apparently sorted for 2013 cars but in 2014 the issue came back. Honda did update the software again however if you look at the response from Honda Sweden, such a situation is beyond the system's capabilities.
    - - - Updated - - -
    Consumer Reports did their own test and pretty much came to the same conclusion
     
    Loading...
  6. Ichiban Founder Staff Team

    England CJ Leeds
    30,118
    6,375
    516
    oh here we go again that 4x4 test on the CR-V is a hoax all a big con this was discussed years ago. holy cr@p
     
    Loading...
    Toggerefc, FirstHonda and 2.4 8thGen like this.
  7. FirstHonda Premium Member Club Supporter

    ^^ Not lately...2 years ago maybe, and I thought the test was found to be flawed in the end?

    My sister has a 2014 CR-V, and regularly goes up and down a (steep) unmade track, which is often iced over or very muddy. The CR-V goes up and down without issue, so something must be working...:lol:
     
    Loading...
    Toggerefc, Zoot and FR-V like this.
  8. legend-ary Moderator Staff Team

    United Kingdom Legend The Big Smoke
    3,799
    2,257
    6
    If you read my follow up post with Honda Sweden's reply, they contested that this test does not represent a real world scenario.

    'If all the available torque required to move the vehicle forward would be transferred to the rear differential then the limit for the torque of the unit would be exceeded.
    If the vehicle continues to run in this state (the front wheels spinning and the rear wheels standing still) the system senses the high speed variation and that the differential clutch slips and reduces the available torque to the rear wheels to prevent overheating. That is why the vehicle moves backward in the video.
    In real conditions a scenario like the roll test with such a high difference in grip between the front and the rear wheels is highly unlikely.'
     
    Loading...
    Toggerefc likes this.
  9. FirstHonda Premium Member Club Supporter

    :sorry:
     
    Loading...
  10. legend-ary Moderator Staff Team

    United Kingdom Legend The Big Smoke
    3,799
    2,257
    6
    aww.. no need:Drinks:
     
    Loading...
    Zoot, stuscrv and FirstHonda like this.
  11. FR-V Valued Contributor ★ ★ ★ ☆ ☆

    Pete Lincs
    317
    163
    All very illuminating, but as long as it pulls my caravan across a wet grassy field I shall be happy:clap:

    Pete C.
     
    Loading...
    Zoot, legend-ary and SpeedyGee like this.