Discovery 2017

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  • 2B
    Member Since: 22 Oct 2020
    Location: hillybit
    Posts: 220
    Netherlands 

    Towing. SD4, TdV6 or V6 petrol

    A family member is thinking about buying a D5 used,
    but we are not sure what is exactly the best option.

    Its mainly used for short trips, less then 10 miles, so I think the SD4 is a "no go zone",
    but will the TdV6 live with it..



    I think my SD4 is powerfull enough to pull 2500Kg of trailer and horses,
    if the hills are not too steep and inclines not too long..

    Questions :
    01. The TdV6 has impressive torque, but limited rev range delivering it. Does the autobox compensate ?
    02. The petrol V6 has much less torque, but HP are increasing with revving up. Isn't that better ?
    03. Do you need a fixed towbar for 2500Kg of horsebox, or will any do ?
    04. Petrol or diesel, considering short trips mostly ?

    I used the data from the brochures to figure out which rev-range / what power is produced :



    RR P400e hybrid Autobiography 2019 & MX-30 BEV
    D5 SD4 HSE 2018 Corris grey, Black roof/balckpack (SOLD), F-Type P300 Ultra Blue 2018 (SOLD)
    23rd Feb 2021 6:53 pm
  • Equilibrium
    Member Since: 26 Feb 2019
    Location: Bristol
    Posts: 754
    United Kingdom 
    2019 Discovery SDV6 HSE Lux Carpathian Grey

    I’d go V6 diesel for that kind of towing. They will be grateful for every bit of torque . Ten mile runs aren’t too bad, mine is being asked to live with a lot worse. Just take it for a longer run every 5-10 trips.
    Drives: 2020 MY20 HSE Luxury SDV6 in Eiger Grey/Glacier
    Departed: 2019 MY20 HSE Luxury SDV6 in Carpathian Grey/Glacier, 440i, 320d, Toyotas, Mondeo, Citroen BX amongst others
    23rd Feb 2021 8:00 pm
  • JonM
    Member Since: 30 Jun 2016
    Location: North Yorkshire
    Posts: 574
    United Kingdom 
    2022 Discovery SDV6 HSE Carpathian Grey

    For towing, torque is king. The SD6 engine is your best choice.
    All of the tow hitch options are rated for 3500Kg but nose weight varies from 100Kg to 150Kg. The electrically deployable one has the highest rating but all are suitable.
    The SD6 engine will be fine on 10 Mike journeys provided you can do most of it at 40mph or over. Mine is often doing a dpf regeneration on m way home from work which is 6 miles of 60mph road.
    MY2022 D5 HSE D300 - with extra nice bits added
    MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price!
    23rd Feb 2021 8:31 pm
  • 2B
    Member Since: 22 Oct 2020
    Location: hillybit
    Posts: 220
    Netherlands 

    Thanks JonM & Equilibrium !

    Did you ever tried a V6 petrol for towing, or is that a pure performance engine
    for acceleration and topspeed ?
    RR P400e hybrid Autobiography 2019 & MX-30 BEV
    D5 SD4 HSE 2018 Corris grey, Black roof/balckpack (SOLD), F-Type P300 Ultra Blue 2018 (SOLD)
    23rd Feb 2021 8:45 pm
  • harrythespider
    Member Since: 19 Jul 2018
    Location: cumbria
    Posts: 404
    United Kingdom 
    2017 Discovery TDV6 HSE Aintree Green

    2B.. you say the TDV6 has 'limited rev range' All diesels have this, its the nature of the beast, diesels generally develop torque at low revs, HGV's foe example generally max out below 2000rpm and they pull massive loads, My D5, TDV6 easily and regularly pulls 3500kg.I don't think I would ever contemplate a D5 with 2.0 litre
    3.0 HSE. climate HUD active diff. elec towbar. FBH and timed climate.Capability plus pack.split TV. surround sound. Intelligent seating. adaptive lights, wade sensing. 360 cameras.pro pack.cooler.advanced tow, auto park,activity key+ more!!!!
    23rd Feb 2021 9:57 pm
  • 2B
    Member Since: 22 Oct 2020
    Location: hillybit
    Posts: 220
    Netherlands 

    @Harrythespider.

    I know diesels are limited in rev range; I had a D3 TdV6 for ten years.

    What I want to say the max torque in the TDv6 is 1700-2300 rpm , range is 600 rpm.
    The SI6 has a max torque from 3000-5300 rpm, range is 2300 rpm !!!

    Yes, torque in the SI6 is over this range only 450 nm...

    So looking from another perspective :

    in the TdV6 torque is above 450nm between 1250 - 3500 rpm, also 2350 rpm...

    I know the TdV6 is good at the job and probably consumes less fuel at-the-job also,,

    But it keeps nagging in my mind what counts more ; higher torque or more HP...
    RR P400e hybrid Autobiography 2019 & MX-30 BEV
    D5 SD4 HSE 2018 Corris grey, Black roof/balckpack (SOLD), F-Type P300 Ultra Blue 2018 (SOLD)
    23rd Feb 2021 10:20 pm
  • al cope
    Member Since: 02 Jan 2019
    Location: Oldbury
    Posts: 372
    United Kingdom 
    2018 Discovery Sd4 (240) HSE Corris Grey

    And just to complicate things, a 2018 or earlier SD4 has 500Nm torque whereas a 2019 onwards has 440 Nm torque, both with 240bhp..

    And for towing it’s always torque is king

    Al
    Now gone - D5 HSE 2Ltr in Corris with black roof, black & dynamic packs & 22" black alloys, a bit of a change after 2 D3's and 2 D4's Smile
    24th Feb 2021 9:48 am
  • mordred1973
    Member Since: 08 Jan 2019
    Location: Northamptonshire
    Posts: 758
    United Kingdom 
    2017 Discovery Td6 HSE Fuji White

    I would say for any vehicle weighing 2400kg torque is king let alone whist towing. The Td6 revs nicely to 4200rpm when driven enthusiastically and sounds good doing it.....mine has been doing plenty of short trips recently, it does bring the distance to next service down a little but mine is still scheduled to be 15300 miles between.

    Have never noticed mine do a PDF regen in 40,000 miles, not s clue how I would know lol. But on the basis I have never had the DPF amber warning it seems it does them perfectly adequately.
    2023 D300 Metropolitan, Hakuba Silver, Low Range, Solar screen, Deployable towbar, FBH, sidesteps.
    24th Feb 2021 10:01 am
  • al cope
    Member Since: 02 Jan 2019
    Location: Oldbury
    Posts: 372
    United Kingdom 
    2018 Discovery Sd4 (240) HSE Corris Grey

    Given a lot of us have come from D3’s and D4’s, the 2 ltr D5 has more bhp and equal or better (in the 500Nm version) torque than a 2.7 V6 D3 which weighed more, and we all thought that was a great tow car..

    So don’t dismiss a 2ltr, just sayin Whistle

    Al
    Now gone - D5 HSE 2Ltr in Corris with black roof, black & dynamic packs & 22" black alloys, a bit of a change after 2 D3's and 2 D4's Smile
    24th Feb 2021 5:03 pm
  • 2B
    Member Since: 22 Oct 2020
    Location: hillybit
    Posts: 220
    Netherlands 

    @ al cope

    That was exactly my idea.

    Though I had mine remapped to 500nm and 210bhp, which was a stunning difference at the time..

    And it became 10% more economical also ! Cool

    But the family member is convinced ; tdV6 it will be !

    Thanks yee-all Bow down Bow down
    RR P400e hybrid Autobiography 2019 & MX-30 BEV
    D5 SD4 HSE 2018 Corris grey, Black roof/balckpack (SOLD), F-Type P300 Ultra Blue 2018 (SOLD)
    24th Feb 2021 6:40 pm
  • harrythespider
    Member Since: 19 Jul 2018
    Location: cumbria
    Posts: 404
    United Kingdom 
    2017 Discovery TDV6 HSE Aintree Green

    Thumbs Up Thumbs Up Thumbs Up Thumbs Up Thumbs Up
    3.0 HSE. climate HUD active diff. elec towbar. FBH and timed climate.Capability plus pack.split TV. surround sound. Intelligent seating. adaptive lights, wade sensing. 360 cameras.pro pack.cooler.advanced tow, auto park,activity key+ more!!!!
    24th Feb 2021 8:41 pm
  • Garyp
    Member Since: 27 Dec 2020
    Location: Northumberland
    Posts: 9
    United Kingdom 
    2017 Discovery Td6 HSE Kaikoura Stone

    Might be a silly question but how do you know when the car is doing a dpf regen?
    27th Feb 2021 9:18 am
  • 2B
    Member Since: 22 Oct 2020
    Location: hillybit
    Posts: 220
    Netherlands 

    Simple : the x-mas tree lights up, text indicating "limb mode" ..

    After the cleaning is over, suddenly all clears. Typical for JLR... Rolling with laughter

    Only joking. Don't have a clue... Laughing
    RR P400e hybrid Autobiography 2019 & MX-30 BEV
    D5 SD4 HSE 2018 Corris grey, Black roof/balckpack (SOLD), F-Type P300 Ultra Blue 2018 (SOLD)
    27th Feb 2021 10:49 am
  • nebc100
    Member Since: 08 Mar 2019
    Location: Altlinster
    Posts: 399
    Luxembourg 
    2018 Discovery Td6 HSE Lux Namib Orange

    You can normally hear a very slight exhaust note difference when it is doing a DPD regen.

    Other than that, you probably won’t notice any difference.

    If you have a diagnostic computer, you can check the exhaust gas temperature and you will see them rise when it is doing a regen.
    27th Feb 2021 11:56 am
  • JonM
    Member Since: 30 Jun 2016
    Location: North Yorkshire
    Posts: 574
    United Kingdom 
    2022 Discovery SDV6 HSE Carpathian Grey

    Garyp wrote:
    Might be a silly question but how do you know when the car is doing a dpf regen?


    If it happens during open road driving you won't notice. If it happens (or is still happening) when you are in town traffic or car park maneuvering, you'll notice a growly exhaust note (which sounds great, it's a shame it doesn't always sound like that), the stop-start will be disabled and from outside the car you'll smell a hot metal exhaust smell. You may also notice smoke wafting from the tail pipes if you stop the engine during a dpf regeneration.
    MY2022 D5 HSE D300 - with extra nice bits added
    MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price!
    27th Feb 2021 3:14 pm
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