The 2017 Audi Q3 30 TFSI stands out as a cost-effective option among best used cars in the compact luxury SUV category. When evaluating used car values, market analysis indicates its resale value will remain relatively stable over the next three years, minimizing depreciation risks for buyers looking to buy used car models that hold their worth. In terms of after-sales support, this vehicle comes with a 60-day full vehicle warranty—though you might also consider the best extended warranty for used cars for extra peace of mind—a professional pre-delivery inspection worth $51, a comprehensive maintenance service worth $106, and a vehicle protection deposit of approximately $4,286, all of which enhance its overall value proposition. Routine maintenance cost is moderate for a luxury brand, with accessible replacement parts (including used car parts near me for potential savings) for common components. Additionally, if you need financing, you can explore used car loan options with competitive best used car loan rates to make your purchase more affordable, further boosting its cost-effectiveness.