Help!! My 2005 2.7 Sport won't start if its been left for more than a day. I've replaced the battery and nothing has changed. Its got to the point that I'm planning to get rid of it.
Does anyone have any ideas of the problem? And, just to compound the problem, the car is in the UK and I'm stuck in Saudi Arabia so it's my wife who's having to jump start it every time.

So it starts if jump started - sounds like a battery issue (yes I see you have replaced the battery but if it needs jump starting it is a battery issue. 07MY RRS TDV6
Arctic Frost
Aspen Interior

If the battery has been changed and it's any good then that would point to something is being left on or not shutting down and drawing current to flatten a battery in 24 hours.

Or could be a duff battery that's been fitted, it happens. 2017 SVR. SVO Scafell grey Ebony interior
2012 3.0 SDV6 Autobiography santorini black with ebony/cirrus interior. Gone

Hi,
sadly dont think we have enough details as both have said above suggests battery or a battery drain

full marks to swmbo for the jump starting can you get her to check the voltage before she unlocks it (while its still asleep)
that would tell you if the battery has held a charge or been drained.
if you have twin tow electrics that is an easy place to check

How far is it been driven after starting as to recharge a near flat battery will take a fair amount of time/miles depending what is being used (heated seats)
It could be its just not getting charge up enough so by the next day its toooooooo weak to start, time for a smart charger maybe
(have I mentioned the tow socket yet )

if its spinning over and over and needs the jump to keep going before it starts it could be heater plugs (although it has warmed up a bit the last few days)

get swmbo on the case

 its Going, Going ! now Gone.
Replaced with a Cayenne 2020
gone Corris Grey HSE Dynamic 2016
gone Ipanema HSE lux 2010
gone Rimini HSE 2005
!!

Thanks to you all for your replies. I'll have a chat with her about testing the voltage before she opens the car. This is the second new battery its had in 5 months. Previous owner changed it in Sept

How long are the drives when it is jump started? If it's short journeys then the battery will never recharge. Indeed, it's possible that the alternator is dying and the battery has no chance to recover.

If checking the voltage via a tow socket isn't in SWMBO skill set, just have her check the battery voltage after unlocking the car. This will still give you a good indication of the state of play of the battery. Then, once it is started, check the voltage again and that'll give an indication of the alternator's state.

A weak alternator, short journeys and cold conditions would be the perfect recipe for a dead battery. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

The secret menu on a range rover tells you what voltage the battery has.
12.3v is low charged battery 12,6v is half charged 12.9v is fully charged
when running you should get 13.5+ volts. At best 14.1v?