D5 Td6 lifespan and durability

[88Hillman]

Good day to everyone!

I'm looking for a replacement daily driver for my wife. She currently drives an LR3 with 305k so it's getting a little long in the tooth, thus this discussion. We tried the LR4 with SCV6 and liked the power but the unit we took for pre-purchase inspection had a super charger issue so we kept looking.

Recently we tried a couple 2017-2019 Discovery with the diesel Td6. What is a realistic lifespan of these engines? I've heard about the major DEF service that has to be done at some point. Is that typically every 100k km?

Next is the REAR timing belt.  It sounds like a very expensive job due to being on the back of the engine. No official schedule so what is a pragmatic mileage to change it?

Both vehicles we test drove were serviced from new at JLR, so I'm hoping there is a lower risk of diesel dilution of the oil causing main bearing failure.

Any experience or advice about these engines would be appreciated.

BTW, I've seen used Td6 with anywhere from 100-200k and prices vary wildly as a result

[binch]

I'm wathcing this thread Kirk with abject fear of what we may learn LOL

How many ecm's are in there now.....?

[JohnnyO]

OK, so I feel the need to chime in here.  I am a long-time loyal fan of all things Land Rovers.  I love the marque, the heritage, and everything it represents.  The adventurous stories and history behind the brand are inspiring, however 'modern' JLR products are not what they used to be. 

There are solid reasons behind the reliability reputation, or lack thereof.  With blind bias in the purchase process, I have had the pleasure of owning two LR4's and a new Defender.  I loved the way they drove.  This was all within a five-year span. 

Why so many vehicles in such a short period of time?  Because every one of them was a POS.  Each had less mileage than the one before, hoping things would improve.  I grew tired of them leaving me stranded (twice) and the constant trips to the mechanic because they are far too complex to repair.  The Gap OBDII diagnostic tool was my friend and without it there would have been many more tow trucks involved. 

The breaking point was the $5K headlight estimate on the new Defender. ( I managed to replace it myself with a $500 FB Marketplace find – taken out of context that sounds insane.) 

I can appreciate the original post was in regard to the TD6 but the entire vehicle needs to be considered.  Buy new with plans to dump it after the warranty is up and you'll be fine.  Lesson learned. 

With my tail between my legs, I made the conscious decision to keep my marriage intact and purchase Japanese for a daily driver.  I'm now on my sixth (classic) Defender and plan to keep to the 'true' Landies until such time as JLR get it right.


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