Be consistent with your oil changes. At Ultimate European, we recommend every 4 months period if you drive your car daily, every 6 months if you do not. This allows you to avoid oil sludge concerns or turbocharger oil concerns on your VW and ensures your Volkswagen is regularly inspected to catch concerns before they become a catastrophic failure.
Maintain your cooling system! VWs can experience very costly cooling system repairs, especially in Arizona. Electrolysis due to degraded coolant from Arizona's extreme heat can cause the cooling system's metal components to degrade and fail; a situation that is completely avoidable by simply flushing your coolant every 3 years or 50,000 miles. Also, only use the correct VW coolant. Incorrect coolant in Volkswagens can chemically react and form a sludge-like substance that restricts radiators and heater cores which will then require costly replacement.