Which Toyota Auris diesel is best the 1.4 or new 1.6?

wayword16

Which Toyota Auris diesel is best? The 1.4 or the new 1.6? Are the two engines supplied from BMW?

bazz26

I'd go with the old reliable and less complicated Toyota built 1.4 d-4d engine. The 1.6 d-4d is a BMW engine which doesn't have a great track record around reliability in previous incarnations. You would hope Toyota would have done their homework and possibly improved it when using it but your never know these days.

colm_mcm

The 1.4 D-4D is reliable but its great to see Toyota finally introduce a more powerful Auris over here. It would make a lovely car out of the Corolla too. Pity they didn't do it sooner.
From a driving perspective I'd get the 1.6 if it's not too much more. But there are the concerns raised by bazz26 above. Not sure how new the engine is. I lost track when they updated the mini from the PSA sourced engine to their own.

That said I'd probably have a civic 1.6 over an Auris despite it being near the end of its life cycle.

JohnBoy26

If it must be an auris get the 1.4d4d. It's a well proven unit and it's still a very quiet and refined engine whilst also being very reliable.

The 1.6 bmw unit does have more power and it might be fine in terms of reliability but tbh it is unknown yet how robust this engine is. Bmw haven't exactly made robust diesel engines in the recent past but that's not to say that this engine isn't reliable.

Id wager it being more complex and more expensive to put right if something does go wrong though.

colm_mcm

Could be just PCPing it and handing it back in 3 years too

colm_mcm

Worth noting that the 1.6 gets double wishbone rear suspension vs the torsion bar on the 1.4

Leonard Hofstadter

I think Toyota Ireland have stopped selling the 1.6 D-4D?

I was looking at Aurises recently for someone and when I checked the only diesel option was the well proven 1.4.

On the topic of the BMW diesel engine used in many Toyotas, I had a very interesting conversation with a BMW specialist mechanic on Tuesday. As it happened the bloke used to work for Toyota.

Anyway, we got talking about BMW engines and how they've made such a pigs ear of so many of their modern ones not to mention the fact that Toyota were now using the N47 engine.

It turns out that according to this mechanic, when Toyota did the deal with BMW, they looked at those engines from top to bottom to make sure that they were up to their standards for quality and reliability (and as we know, Toyotas are infinitely more reliable than BMWs!).

Toyota forced BMW to modify quite a few bits of those engines, note how they have a dipstick whereas of course the BMWs don't have that most basic of features. They also forced BMW to change the timing chain, and apparently there are Toyotas using the N47 engine with over 150,000 miles on the clock still on the original chain and no sign of it failing any time soon.

Now this is only hearsay from a BMW mechanic but I thought it was worth sharing because if what he's said is true, I'd be having the 1.6 D-4D every time over the 1.4 as that has a measly 89 bhp.

JohnBoy26

captainspeed wrote: »

I think Toyota Ireland have stopped selling the 1.6 D-4D?

I was looking at Aurises recently for someone and when I checked the only diesel option was the well proven 1.4.

On the topic of the BMW diesel engine used in many Toyotas, I had a very interesting conversation with a BMW specialist mechanic on Tuesday. As it happened the bloke used to work for Toyota.

Anyway, we got talking about BMW engines and how they've made such a pigs ear of so many of their modern ones not to mention the fact that Toyota were now using the N47 engine.

It turns out that according to this mechanic, when Toyota did the deal with BMW, they looked at those engines from top to bottom to make sure that they were up to their standards for quality and reliability (and as we know, Toyotas are infinitely more reliable than BMWs!).

Toyota forced BMW to modify quite a few bits of those engines, note how they have a dipstick whereas of course the BMWs don't have that most basic of features. They also forced BMW to change the timing chain, and apparently there are Toyotas using the N47 engine with over 150,000 miles on the clock still on the original chain and no sign of it failing any time soon.

Now this is only hearsay from a BMW mechanic but I thought it was worth sharing because if what he's said is true, I'd be having the 1.6 D-4D every time over the 1.4 as that has a measly 89 bhp.

It certainly wasn't true with the pug unit fitted to early 00 corollas. It was the same dreadful lump that was found in citreons and Peugeots of the same era.

Leonard Hofstadter

JohnBoy26 wrote: »

It certainly wasn't true with the pug unit fitted to early 00 corollas. It was the same dreadful lump that was found in citreons and Peugeots of the same era.

Well I suppose the XUD was at least a reliable unit so they probably felt they didn't need to bother doing anything to it! I should have said the bloke who was telling me this story still has plenty of Toyota mates in the trade, he was telling me about the training the Toyota mechanics were getting on the N47 and mentioned that the timing chain was one of the things Toyota got changed.

Toyota definitely modified the N47, the DMF is different, the ECU is different and there's other changes to the engine as well (including the aforementioned dipstick) which were designed to make it more refined since the N47 is quite an old engine now (although the 1.4 D-4D is even older).

Anyway, this is all a bit academic because I've just checked the Toyota price list and the BMW engine is definitely not available in the Auris for Ireland.

I note that the updated RAV4 is rated as 125 bhp in diesel guise, I thought they were using the N47 in the RAV4 these days as well and it has around 140 bhp since it's the 2.0 version?

wayword16

Thanks everyone for your feedback. I ended up going for a jap import Toyota Prius. Have it a couple of months now and absolutely love the car.