"severe operating conditions" - service indicator at 7500km

[Rob Burns]

Likely the service indicator was set to 7,500kms - just get the dealer to reset it to 15,000kms.

This.

Or get your oil & air filter replaced anyway

Don't do this. Replacing your engine oil before the 1year/15k mark will void your warranty on the engine. I guess you can get the air filter checked but I'd be surprised if it requires replacing.