Used 2018 Audi A6 for SaleNationwide

How much does the 2018 Audi A6 cost?

Prices have softened 9.82% compared to this time last year, making it a favorable time to shop this model year.

There are 633 listings available, which gives you a solid pool to compare prices and equipment.

Is the 2018 Audi A6 a good car?

Yes — the 2018 Audi A6 earns a 5/5 user rating, which points to strong owner satisfaction. Drivers consistently praise its interior design, powerful performance, and luxurious ride, and many also like its handling and feature set. For you, that means it fits especially well if you want a refined midsize luxury sedan with a premium cabin and a tech-forward feel. The market also shows 34.9% of listings as good or great deals, which adds to its appeal for shoppers who are ready to compare carefully.

Is the 2018 Audi A6 reliable?

Owners rate it 5/5, a strong signal of long-term satisfaction.

The user feedback also points to a car that feels dependable in daily use, with owners highlighting its trouble-free luxury experience, strong performance, and the kind of long-term ownership appeal that makes it easy to count on. That said, used luxury sedans can carry higher ownership risk if maintenance history is unclear, so you should pay close attention to service records and overall condition before you buy.

What should I look for when buying a used 2018 Audi A6?

At 66.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should run a vehicle history report on every candidate and prioritize listings with clean records and documented maintenance. A pre-purchase inspection is especially important on a used luxury sedan like this, since condition and upkeep can matter as much as mileage. Focus on signs of wear in the interior, electronics, and overall mechanical presentation so you can separate a well-kept example from one that may need expensive catch-up work.

Is now a good time to buy a used 2018 Audi A6?

This looks like a moderate, selective buyer’s market, so you have room to shop carefully without rushing.

• Deal availability: 34.9% of listings are priced as good or great deals.
• Inventory: There are 633 listings available.
• Price trend: Prices have softened 9.82% compared with last year.
• Clean inventory: 66.5% of listings are accident-free.

If you find a listing below $16,375, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 Audi A6's resale value?

The current average of $16,493 sits slightly below last year's $18,290.

That decline suggests the market has already adjusted downward, which can help you buy at a more favorable entry point today. For a future seller, the same trend means resale value may depend heavily on condition, mileage, and how well the car has been maintained. Well-kept examples should hold up better than average, especially if they present as clean, well-optioned luxury sedans with strong appeal to used buyers.

Vehicles with strong owner satisfaction ratings, like this model year's 5/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 Audi A6 or consider a different year?

If you're weighing the 2018 against nearby model years, here's how to think about it:

Choose the 2018 if:

• 34.9% of listings are priced as good or great deals.
• At 66.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 9.82% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $21,929, the 2019 costs more than the current year's $16,493 average.
• It brings a redesigned cabin with more advanced technology and driver-assistance features.

The bottom line: If you want the better value play, the 2018 is the stronger starting point because it combines a lower average price with solid owner satisfaction. If you’re willing to spend more for a newer redesign and upgraded tech, the 2019 is the better secondary path for buyers who prioritize the latest cabin experience over upfront savings.

These recommendations are based on CarGurus' proprietary market data from September 22, 2026, CarGurus experts' opinions, and generative AI.