Results 1 to 11 of 11

Thread: Liking the new(ish) MOT

  1. #1
    Senior Member kalniel's Avatar
    Join Date
    Aug 2005
    Posts
    28,766
    Thanks
    1,419
    Thanked
    2,844 times in 2,311 posts
    • kalniel's system
      • Motherboard:
      • Gigabyte X58A UD3R rev 2
      • CPU:
      • Intel i7 950
      • Memory:
      • 12gb DDR3 2000
      • Graphics card(s):
      • AMD HD7870
      • PSU:
      • XFX Pro 650W
      • Case:
      • Cooler Master HAF 912
      • Operating System:
      • Win 7 Pro x64
      • Monitor(s):
      • Dell U2311H
      • Internet:
      • O2 8mbps

    Liking the new(ish) MOT

    So the A3 had it's first MOT today, which incidentally is my first MOT for a car newer than 2012 - and I never knew you got such interesting breakdown of figures. The brake test especially - now I know the exact real world weight of the car (plus the tester I guess), weight distribution, braking force and distributions etc. Fascinating

    Car weighs 1314kg, distributed predictably poorly at ~58:42 (though presumably heavier engined A3s are worse). Road friction tells me how much I'm losing due to rolling and mechanical resistance, which is about 54 kgf or about 1/15 of the friction when braking. The friction distribution is interesting at 54:46, telling me that despite more weight being on the front axle, there's not the same proportional increase in rolling resistance, so either the mechanicals are smoother (which you wouldn't expect, given complexity of drive and steering) or the tyres have better rolling resistance (which would tally - Michellin PS4 on the front, ContiSport5 on the back). Brake force distribution is 61:39, pretty much as you'd expect and presumably more front-loaded than the weight distribution both for safety and to account for force transfer, though as this is only measured to wheel locking you presumably have to account for differences in tyre performance.

    Emissions same as always, and as expected for a young car, beautifully clean - though a bit on the lean side which isn't superb for life of the cat. Will have to see what it's like next year as a comparison.

  2. Received thanks from:

    Millennium (10-01-2018)

  3. #2
    root Member DanceswithUnix's Avatar
    Join Date
    Jan 2006
    Location
    In the middle of a core dump
    Posts
    8,994
    Thanks
    413
    Thanked
    890 times in 760 posts
    • DanceswithUnix's system
      • Motherboard:
      • M5A-97 EVO R2.0
      • CPU:
      • FX-8350
      • Memory:
      • 16GB ECC 1333
      • Storage:
      • 500GB Linux, 1TB Games (Win 10)
      • Graphics card(s):
      • Asus Strix RX Vega 56
      • PSU:
      • 650W Corsair TX
      • Case:
      • Antec 300
      • Operating System:
      • Fedora 28 + Win 10 Pro 64 (yuk)
      • Monitor(s):
      • Benq XL2730Z 1440p + Samsung 2343BW 2048x1152
      • Internet:
      • Zen 80Mb/20Mb VDSL

    Re: Liking the new(ish) MOT

    Is that the actual measured weight, and not the registered kerb weight?

  4. #3
    Senior Member kalniel's Avatar
    Join Date
    Aug 2005
    Posts
    28,766
    Thanks
    1,419
    Thanked
    2,844 times in 2,311 posts
    • kalniel's system
      • Motherboard:
      • Gigabyte X58A UD3R rev 2
      • CPU:
      • Intel i7 950
      • Memory:
      • 12gb DDR3 2000
      • Graphics card(s):
      • AMD HD7870
      • PSU:
      • XFX Pro 650W
      • Case:
      • Cooler Master HAF 912
      • Operating System:
      • Win 7 Pro x64
      • Monitor(s):
      • Dell U2311H
      • Internet:
      • O2 8mbps

    Re: Liking the new(ish) MOT

    Quote Originally Posted by DanceswithUnix View Post
    Is that the actual measured weight, and not the registered kerb weight?
    Yes, broken down per axle too. Manual says kerb weight is 1300kg (no doubt with smaller wheels, no spare wheel, none of my bits and bobs still in the car or the full tank of fuel I had )
    Last edited by kalniel; 09-01-2018 at 08:12 PM.

  5. #4
    Senior Member spacein_vader's Avatar
    Join Date
    Sep 2014
    Location
    Darkest Northamptonshire
    Posts
    777
    Thanks
    45
    Thanked
    136 times in 104 posts
    • spacein_vader's system
      • Motherboard:
      • Asus B85M-G
      • CPU:
      • i5 4460 3.2GHz
      • Memory:
      • 4x4GB Crucial DDR3 1600
      • Storage:
      • 128GB SSD, 256GB SSD
      • Graphics card(s):
      • Asus RX-480 Dual OC 4GB
      • PSU:
      • Corsair HX 520W modular
      • Case:
      • Antec Mini P180
      • Operating System:
      • Windows 10 Pro
      • Monitor(s):
      • BenQ GW2765, Dell Ultrasharp U2412
      • Internet:
      • Origin Fibre Max

    Re: Liking the new(ish) MOT

    The best bit of the newer teat regime is being able to see the entire MOT history of a car by putting the reg into a government website.

    Certainly helps decide when looking at used cars.

  6. Received thanks from:

    kalniel (09-01-2018)

  7. #5
    root Member DanceswithUnix's Avatar
    Join Date
    Jan 2006
    Location
    In the middle of a core dump
    Posts
    8,994
    Thanks
    413
    Thanked
    890 times in 760 posts
    • DanceswithUnix's system
      • Motherboard:
      • M5A-97 EVO R2.0
      • CPU:
      • FX-8350
      • Memory:
      • 16GB ECC 1333
      • Storage:
      • 500GB Linux, 1TB Games (Win 10)
      • Graphics card(s):
      • Asus Strix RX Vega 56
      • PSU:
      • 650W Corsair TX
      • Case:
      • Antec 300
      • Operating System:
      • Fedora 28 + Win 10 Pro 64 (yuk)
      • Monitor(s):
      • Benq XL2730Z 1440p + Samsung 2343BW 2048x1152
      • Internet:
      • Zen 80Mb/20Mb VDSL

    Re: Liking the new(ish) MOT

    Interesting, I wonder if that affects the handbrake test. My kit car has a registered kerb weight rather higher than the actual weight, but the handbrake has to be able to hold the registered weight which it always struggled with.

  8. #6
    Senior Member kalniel's Avatar
    Join Date
    Aug 2005
    Posts
    28,766
    Thanks
    1,419
    Thanked
    2,844 times in 2,311 posts
    • kalniel's system
      • Motherboard:
      • Gigabyte X58A UD3R rev 2
      • CPU:
      • Intel i7 950
      • Memory:
      • 12gb DDR3 2000
      • Graphics card(s):
      • AMD HD7870
      • PSU:
      • XFX Pro 650W
      • Case:
      • Cooler Master HAF 912
      • Operating System:
      • Win 7 Pro x64
      • Monitor(s):
      • Dell U2311H
      • Internet:
      • O2 8mbps

    Re: Liking the new(ish) MOT

    Quote Originally Posted by DanceswithUnix View Post
    Interesting, I wonder if that affects the handbrake test. My kit car has a registered kerb weight rather higher than the actual weight, but the handbrake has to be able to hold the registered weight which it always struggled with.
    Interesting. According to this test the parking brake just has to apply a force equal or greater than 16% of the actual measured weight. This is an electronic brake though so maybe it's different.

  9. #7
    root Member DanceswithUnix's Avatar
    Join Date
    Jan 2006
    Location
    In the middle of a core dump
    Posts
    8,994
    Thanks
    413
    Thanked
    890 times in 760 posts
    • DanceswithUnix's system
      • Motherboard:
      • M5A-97 EVO R2.0
      • CPU:
      • FX-8350
      • Memory:
      • 16GB ECC 1333
      • Storage:
      • 500GB Linux, 1TB Games (Win 10)
      • Graphics card(s):
      • Asus Strix RX Vega 56
      • PSU:
      • 650W Corsair TX
      • Case:
      • Antec 300
      • Operating System:
      • Fedora 28 + Win 10 Pro 64 (yuk)
      • Monitor(s):
      • Benq XL2730Z 1440p + Samsung 2343BW 2048x1152
      • Internet:
      • Zen 80Mb/20Mb VDSL

    Re: Liking the new(ish) MOT

    Quote Originally Posted by kalniel View Post
    Interesting. According to this test the parking brake just has to apply a force equal or greater than 16% of the actual measured weight. This is an electronic brake though so maybe it's different.
    My kit car has never been weighed, but holding 900kg and holding the something like 1200kg declared weight is some difference.

  10. #8
    Senior Member Xlucine's Avatar
    Join Date
    May 2014
    Posts
    1,360
    Thanks
    203
    Thanked
    100 times in 85 posts
    • Xlucine's system
      • Motherboard:
      • Gigabyte Z97MX Gaming 5
      • CPU:
      • i5 4690K @stock
      • Memory:
      • 16GB @2133 11-11-11-27
      • Storage:
      • Crucial MX500 1TB, Crucial MX100 512GB, 2TB hard disk
      • Graphics card(s):
      • EVGA 980ti
      • PSU:
      • Seasonic S12G-550
      • Case:
      • Silverstone TJ08-E
      • Operating System:
      • W10 pro
      • Monitor(s):
      • Viewsonic vx3211-2k-mhd, Dell P2414H
      • Internet:
      • Virgin 150 mb fibre

    Re: Liking the new(ish) MOT

    Quote Originally Posted by spacein_vader View Post
    The best bit of the newer teat regime is being able to see the entire MOT history of a car by putting the reg into a government website.

    Certainly helps decide when looking at used cars.
    That's been a thing for a while - I can see MOT records for my car (first registered 04) going back to 07

  11. #9
    bored of Vienetta now
    Join Date
    Nov 2009
    Posts
    4,733
    Thanks
    1,125
    Thanked
    672 times in 507 posts
    • ik9000's system
      • Motherboard:
      • Asus P7H55-M/USB3
      • CPU:
      • i7-870, Prolimatech Megahalems, 2x Akasa Apache 120mm
      • Memory:
      • 4x4GB Corsair Vengeance 2133 11-11-11-27
      • Storage:
      • 2x256GB Samsung 840-Pro, 1TB Seagate 7200.12, 1TB Seagate ES.2
      • Graphics card(s):
      • Gigabyte GTX 460 1GB SuperOverClocked
      • PSU:
      • NZXT Hale 90 750w
      • Case:
      • BitFenix Survivor + Bitfenix spectre LED fans, LG BluRay R/W optical drive
      • Operating System:
      • Windows 7 Professional
      • Monitor(s):
      • Dell U2414h, U2311h 1920x1080
      • Internet:
      • 200Mb/s Fibre and 4G wifi

    Re: Liking the new(ish) MOT

    Quote Originally Posted by Xlucine View Post
    That's been a thing for a while - I can see MOT records for my car (first registered 04) going back to 07
    dare i look..... :s

  12. #10
    RGB Champion Ttaskmaster's Avatar
    Join Date
    Nov 2013
    Location
    Reading, UK
    Posts
    4,058
    Thanks
    137
    Thanked
    422 times in 350 posts
    • Ttaskmaster's system
      • Motherboard:
      • Asus X99-PRO
      • CPU:
      • i7 5820K J-batch o/c to 4.5GHz
      • Memory:
      • 16GB Corsair DDR4 somethingorother
      • Storage:
      • Samsung Evo 120GB and Seagate Baracuda 2TB
      • Graphics card(s):
      • Gigabyte G1 GTX980Ti
      • PSU:
      • EVGA Supernova G2 1000W
      • Case:
      • Phankecks Enthoo Luxe perspex window
      • Operating System:
      • Win10 64 Home
      • Monitor(s):
      • Acer Predator XB270HU 1440 IPS GSync
      • Internet:
      • BT 0.7Mbps 'In The Sticks' version

    Re: Liking the new(ish) MOT

    Quote Originally Posted by kalniel View Post
    Manual says kerb weight is 1300kg
    And you're carrying 14kg extra?
    Wow, all those pens, flip flops, bottles of sunscreen, loose pennies, newspapers, Ginsters crumbs, half eaten sandwiches and other car junk really add up, don't they?

    Kerb weight should include all consumables, usually including full tank. Everything (including user manuals, ice scrapers and first aid kits) it comes with as standard and needs to make it go, apart from a driver.

  13. #11
    Senior Member Xlucine's Avatar
    Join Date
    May 2014
    Posts
    1,360
    Thanks
    203
    Thanked
    100 times in 85 posts
    • Xlucine's system
      • Motherboard:
      • Gigabyte Z97MX Gaming 5
      • CPU:
      • i5 4690K @stock
      • Memory:
      • 16GB @2133 11-11-11-27
      • Storage:
      • Crucial MX500 1TB, Crucial MX100 512GB, 2TB hard disk
      • Graphics card(s):
      • EVGA 980ti
      • PSU:
      • Seasonic S12G-550
      • Case:
      • Silverstone TJ08-E
      • Operating System:
      • W10 pro
      • Monitor(s):
      • Viewsonic vx3211-2k-mhd, Dell P2414H
      • Internet:
      • Virgin 150 mb fibre

    Re: Liking the new(ish) MOT

    If you include a full fuel tank you make cars with bigger tanks look "worse" (since they're heavier, what with the extra fuel). I say include the fuel & such needed for 100 miles of driving without damaging the engine, that way you're encouraging efficient engines without penalising the convenience of a bigger tank

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •