Mitsubishi has added another feather in the cap of its Diamond Advantage program, with the addition of up to 10 years of roadside assistance for buyers.

The decade-long roadside assistance promise is now offered alongside 10 years of new-car warranty and 10 years of capped-price servicing, which the Japanese automaker packages together under the Diamond Advantage umbrella.

However, all three components of the updated program are conditional on the owner servicing their vehicle on time at a Mitsubishi dealership, based on the service schedule for their model.

All new Mitsubishi vehicles on sale have service intervals of 12 months or 15,000km – whichever comes first.

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Buyers are initially given 12 months of complimentary roadside assistance after their new-car purchase, with that extending for an additional 12 months after each service at a Mitsubishi dealership – for up to 10 years.

Similarly, Mitsubishi’s standard new-car warranty is five years or 100,000km, but is extended for up to 10 years or 200,000km if the vehicle is serviced on time and within its dealership network.

Mitsubishi Australia’s latest announcement comes 21 years to the day after the Japanese auto brand launched its ‘5-10’ warranty, which initially offered a new-car warranty of five years and a powertrain warranty of 10 years.

While Mitsubishi has been a pioneer of long new-car warranties in this market, it sits behind two other brands in terms of warranty length.