I think you missed the point that the dealer service crew threw their hands up and walked away from the problem - twice in fact with issues with this vehicle. It would likely have been a case of swap an entire vehicle piece by piece around the faulty part until the entire thing expired - I can't think what the downtime alone would have cost on that process so at least with the approach we've taken the downtime and cost (apart from the actual injection system clean and replacement of injectors) has been virtually nothing. I note that most sources are recommending replacement of these piezo injectors at 120-150,000Km now which this vehicle is bang in the middle of mileage wise.
No particular love for this vehicle (especially after the shite tricks it's pulled) - but looking at all of the issues and factors and weighing up the "issues and factors" list objectively - $10K is the saving in fuel burn alone in the first 100,000km. If I was going to replace the vehicle, it would be a low mileage or new option and it would cost a lot more than 10K. As I said, business decision and to get something brand new to do the job of this one is currently not easy, will cost something like 85K+ and take months to arrive and back to the previously mentioned issues with servicing and the like. Something had to be done in the meantime either a second hand replacement vehicle which might have other issues or fix what we have and also factor in for a business asset R&M is 100% deductible so it's not someone spending on a toy situation.
Also, not many vehicles have such an interesting failure of the powertrain control module which has taken out a shopping list of other sensors and parts (which actually served to hide the actual problem) - and not many have such a "I'm going to brick myself" instant reaction to a replacement module getting powered up in the vehicle in place of the original with the failure. Also, I could have gone cheaper and only replaced what needed replacing and done the repair half arsed for about $2000, instead of the full set of five injectors and EGR delete instead of repairing that bit too. That would have been an option if I was flogging the thing to be fair.
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