One more from me, if you don't mind.

Generally, the prolonged warranty is pretty good bussiness for the manufacturer/dealer.

Lets consider 3 years/6000 hours warranty.

With 250/500 hours inspection interval (the routine for most japanese, korean, american brands) the enduser is oblidged to purchase 24 or 12 inspections from the supplier, what gives guaranteed 3000 to 5000 Euro income per truck. This is quite a tibit.

When the user considers the alternative of selfinspecting the trucks or using the "non-authorised" service companies it shows the savings on the level of 30-50% of maintenance costs, usually with no loss to the service quality issues.

The potential warranty repair costs are usually low within first three years and very often the supplier charges enduser for them because of "misuse", usually alleged.

This is probably the reason, why many manufaturers/dealers keep 250/500 hours inspection interval.

The main european manufacturers (Linde, Jungheinrich, Still) for many years recommend 1000 hours inspection intervals and offer the significant reduction of mantenance costs.

The issue is - in Europe dominates the full service/LTR culture (in some countries 60 to 80 % of the new trucks on the market are under LTR or FS. And the biggest clients are the LTR fleet operators, who strongly influence on maintenance costs reduction.

Generally, IMHO, the prolonged warranty is mainly a marketing issue to raise the suppliers income.