I knew the car had an oil leak on it when I purchased it, I could not see any leaks at top of engine so for better or worse I continued with the purchase (car has had £2000+ gearbox rebuild last month and £1000+ front end face lift, £1000+ LPG conversion)

On my way home (first drive) I could smell burnt oil when at lights, at 1 set of lights I saw some smoke coming from under the bonnet drivers side

Only picked car up tomorrow and don't have any time to look at it till Monday or even Tuesday, anyone know where I should start looking?

I know the 3.0 x5 bmw engine suffered with a bad oil sump cracking , is the 4.4 any better?

blimey you pick em don't you good luck hope u get sorted

I would have thought the first thing to do would be replicate the problem and have a look then in daylight.

If the oil is being burnt, it may be leaking from somewhere onto say the exhaust, but it burns away before you see it, like when you bought it.

Hopefully its nothing too serious 

sounds (and smells like I guess)

rocker cover gaskets hardened, allowing oil leaking onto hot manifold
check pcv hosing as well as excess pressure forces further leaks once fixed

remove spark plugs and check for oil in the wells too
I hope thats all its is

Can you not take it back to the dealer, legally they have to offer some sort of warranty now.

You can reject as unmerchandable quality. Get on to CAB or your house insurance legal policy and get your money back. 2005 L322 Vogue Gold gone
2006 L322 Vogue Black gone
2011 L322 Vogue Silver gone
2011 L322 Autobiography Black gone
2015 L405 Autobiography LWB Black gone
2019 L405 P400e Range Rover Autobiography LWB Eiger grey / black roof gone
2001 P38a 30th Anniversary Wimbledon Green gone
2019 L405 P525 Autobiography LWB British Racing Green

do you really want to walk away from this car?
sounds like big money has been spent on gearbox and LPG and with a facelift you may struggle to find another with all of that done

I would replace the rocker cover gaskets, pcv hoses, lower temp mod the thermostat and replace all the hoses, rad and header tank. this is maintenance stuff for the M62 imo

if its leaking oil after all other things have been done what faith do you that jobs have been done properly ? id back it

The car won't be rejected but I may try and action the warrenty, the gearbox rebuild was £2000 done 4 weeks ago front end upgrade looks nice in my opinion

A engine oil leak can be repaired and probably cheaper than the £2k gearbox rebuild, the only things I have found not to work are

Reverse camera fitted to rear spoiler badly, also has a fake shark find on the spoiler (just going to change spoiler I think)

Rear window wiper not working (common problem and have seal to rebuild it)

Oil leak to engine not yet investigated but from reading more than likely to be pcv valve

And a cracked windscreen (behind the old tax disc holder)

Everything else works which is its self would cost lots of time if not money trying to fix

good luck looks like you've bought a peach

X2 with the good luck..cracking looking fatty. Keep us posted with any work your doing..always interesting to read

had a day on the FF today, wasted lots of time with blowing fuse's (still not 100% sure what it was but have a idea)
the car now had full digital TV (after market, with TV in motion but looks OEM)
upgraded DVD Mk4 SatNAV system (CD based satnav in for sale section soon)
fitted my A/V in / out cable to TV unit
redone the telephone wiring have fitted a ULF but it's poor (think it's a very old one and my phone is the S7)
and added the new steering wheel badge