Thread: 300tdi vs td5

Originally Posted by loanrangie

This is my first diesel and i am really suprised by some comments about lack of performance of the tdi auto, i have never wanted for more power except for when towing a 1200kg caravan going up long inclines, day to day i find i can surprise a few car drivers keeping up or even pulling away from them - and mine is dead stock @ 222k.

Exactly!

Originally Posted by justinc

What Slunnie mentions is right on the money. Sit in and then drive a D1 and then a D2 and you'll pick the D2 any day. In fact, most will have no real issues at all, even fewer problems in the post '02 models

MY wife hates driving my P38A but loves the D2 and even the D1. Go figure as the Yanks say.

I have a 2003 disco with the TD5 auto ACE etc. I also have a 300 TDi defender. It has all been said before, horses for courses. Electronics will allways out perform, get better fuel economy/consumption, better reliability, smoother etc etc. If you can afford it go the newer vehicle. This issue was which motor is better was alive and well when the 200 TDi was the norm and the 300 came along. There have been a few throwbacks to the Isuzu but at the end of the day it is not going to be the motor that is going to let you down, it is going to be a stuffed aircon, broken shock absorber, holed radiator or some alternator failure. If you do breakdown out in the bush, you should not be out there by yourself anyway so there will be some one to help you out even if it is a tow.

The newer the vehicle the less worn the bits will be, go with what you can afford. All that said I just hope I never have to change an injector on the TD5. :-))

This is a bit like comparing the 4.6 P38A with the 3.5/3.9 Classic RR. Todays electronics can make or break a car.

My '86 Classic had a bored and stroked 3.5 which took it out to 4.6 litres. My current heavier and new 4.6 RR consistently outperforms the old classic for fuel consumption. I know this because I have logged every drop of fuel I've put into the two of them since I owned them.

Believe it or not, but I regularly get 13 litres/100 km out of the 4.6 petrol P38A on highway. However, having the roof bars on can increase that by 1-2 litres/100 km.

I had one of the owners of KLR Auto in the car one day and I pointed to the dash display - it was showing 9 litres/100 km on the freeway. He was amazed. (I didn't show him the 30 litres/100 km when I was pulling the trailer loaded with a tonne of fence posts )

Now would I own a Td5. Probably not.

Originally Posted by incisor

sigh.

i know of a gentleman from bribie island who consistently gets better than 7's fuel economy in his manual 3dr 300tdi disco.

he has one of them motors, smooth as a babies butt and quiet as, compared to both the 300tdi's i have owned.

he had me shaking my head in disbelief when we first started talking about it one day in my shop, took me out and showed me his log book...

i punched the figures into my calculator and low and behold it was 6.9 something. started his truck up and it was sweet as.. no roof racks or anything like that, stock standard in everything i saw and had bridgestone highway tyres on.

does a run to caloundra two or three times a week (100+ klm round trip) to visit family and nudges it along just above the speed limit most of the time he reckons..

worst he ever got was high 11's hauling a car trailer with an old hightop van on it, pretty amazing going but he has everything in black and white in the little red log book of his..

Thats all I wanted to hear, some sort of conformation from someone else with some sort of proof and a reasonable explanation as to why.

From the original LR owners handbook for the Disco 1 :
on Page 147 - General Data Section.

FUEL CONSUMPTION
300TDi ( all in l/100km )
Simulated urban cycle .... Manual 8.6 Auto 9.3
Constant speed 90km/h .... M 6.6 A 6.4
Constand speed 120km/h ....M 10.0 A 9.4

V8i ( off topic but just for interest sake )
Simulated urban cycle .... Manual 18.2 Auto 19.6
Constant speed 90km/h .... M 10.5 A 10.5
Constand speed 120km/h ....M 13.4 A 13.4

Cheers

Originally Posted by waynep

From the original LR owners handbook for the Disco 1 :
on Page 147 - General Data Section.

FUEL CONSUMPTION
300TDi ( all in l/100km )
Simulated urban cycle .... Manual 8.6 Auto 9.3
Constant speed 90km/h .... M 6.6 A 6.4
Constand speed 120km/h ....M 10.0 A 9.4

V8i ( off topic but just for interest sake )
Simulated urban cycle .... Manual 18.2 Auto 19.6
Constant speed 90km/h .... M 10.5 A 10.5
Constand speed 120km/h ....M 13.4 A 13.4

Cheers

Why does the diesel auto do better at constant speed? Is it higher geared?

best i've got out of 300 tdi disco is 9.5lt per 100 km when going up to rainbow beach on the highway. I do have a bull bar,roof racks and wider all terrain tyres on though. Interestingly though whilst fully loaded and towing 1.5 tonne van i was still able to maintain 13lt per 100km and that was whilst going up to Warwick. Hills are a big killer though as lack of power makes the motor have to work really hard. 145 km in a D1 mcrover you must be the stig, i've wound it up to 135 once and never again far too unstable at that speed barn doors are not meant to go that fast.