Thread: 4.0 petrol vs v8 petrol

I have had my V6 for five Years. I had a Haltech chip fitted by graham Cooper in Sydney. On a trip fully loaded four passengers and luggage to Queensland 2580 km and averaged 10 litres per 100 km. Also did a six week trip up north with a 3 ton caravan and averaged 18 litres per 100 over 4500 kms.Great car and much cheaper than a deisel.

Originally Posted by Prokiwi

If you do the sums properly the diesel will far outweight the petrol , both in economy ,resale etc etc . I was a Fleet analysist in a previous life and have done the sums over and over again....

I get 6.9L on the open highway at 110kmh and around town I do 11l/100kmh . My long term average is 8.9l/100kmh.

I drive a 2012 RRS 3.0L v6 diesel. I have also had the ecu reprogrammed by superchips and now I have power to play with as well as a smooth ride.

Petrols are fats becoming old school both in technology , economy and resale..... oh and by the way , i can beat a landcruiser sahara v8 turbo diesel off the lights and up too 100kmh every time ..........LOL

All of what you have said is fine when purchasing a new vehicle with 3 to 5 years warranty, but this gentleman is trying to figure out what is the best secondhand model to buy, more than likely without factory warranty and on what sounds like a restricted budget.

Diesels are great but check out how many TDV6's have failed compared to V8's, this is a potential issue if you are purchasing a vehicle with no warranty. Can anyone even remember someone on here ever mentioning about a V8 that has blown up?

Plus when new the V8 was more expensive than a TDV6 so it may have made financial sense then, now the opposite is true by on average by about 5 to 10k. That's a lot of fuel you can buy and then on top compare service costs of both and the V8 starts to make a lot of sense.

Congrats on 6.9 litres per hundred that is pretty impressive, I do alot of country freeway driving and best I can get from our 2.7 is on average between 10.5 and 12 litres per hundred on the highway at the posted speed limit.

cheers,
Terry

I had a D3 2009 V6 SE and it was (is) a great car. I bought it due to perceived $ savings over the TDV6. It served me very well, thirsty, fuel quite costly, especially as recommended fuel is premium unleaded. I was warned by the dealer that if towing I would be stopping to fill it often, and they were right on, however, I would buy one again as it was the right decision for the dollars at the time and served my family, business and I extremely well. I now have a D4 TDV6 3L, and I have to say its impressively better, I am blown away at the minor and major improvments and the amazing performance of the 3 litre deisel. It hardly notices my caravan, so much so I have to be careful not to over do it! D3 Petrol, loved it - a great starter for the LR Disco addiction! Its not a mistake, its just a choice. As far as V6 vs V8. I have no direct LR V8 experience, but I do know that if the gear box is correct/matched for the V8, the engine should run easier. I have owned a non LR petrol V8 in an SUV and its fuel consumpton under heavy load was less than its V6 sibling, but around town, it was a wallet killer and the V6 was better.