Used 2018 Audi A6 for SaleNationwide

How much does the 2018 Audi A6 cost?

Prices have softened 8.33% compared to this time last year, making it a favorable time to shop this model year.

There are 630 listings available, which suggests a healthy amount of inventory to compare.

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 the interior design, the powerful performance, and the handling. The A6 also gets credit for feeling luxurious and well equipped, which fits its role as a refined midsize luxury sedan. For you, that means it can make sense if you want a premium daily driver with a restrained look and a comfortable, upscale cabin.

37.9% of listings are priced as good or great deals, so there is still room to shop selectively.

Is the 2018 Audi A6 reliable?

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

The owner feedback also points to a dependable-feeling ownership experience, with praise centered on the car’s overall quality, performance, and luxury feel. That kind of feedback suggests the A6 can be a reassuring choice if you want a used sedan you can count on for regular driving.

For used buyers, the main long-term ownership risk is less about day-to-day appeal and more about making sure the specific car has been maintained properly.

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

At 62.9% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report and confirm whether any prior damage was repaired properly. A pre-purchase inspection should focus on bodywork quality, panel alignment, and signs of inconsistent wear or repair. It also makes sense to pay close attention to overall condition, since a luxury sedan like this can be more expensive to refresh if previous damage was poorly handled.

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

This looks like a moderate, selective buyer’s market, so you can shop carefully and still find worthwhile options.

• Deal availability: 37.9% of listings are priced as good or great deals.
• Inventory: There are 630 listings available.
• Price trend: Prices have softened 8.33% compared with last year.
• Clean inventory: 62.9% of listings are accident-free.

If you find a listing below $16,132, 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 $16,132 sits slightly below last year's $17,598.

That price movement suggests the A6 has softened enough to create a more attractive entry point for buyers, but it also means future sellers may face some depreciation pressure if the market stays soft. If you buy at the right price and keep the car in strong condition, you can help offset some of that downside. The model’s premium image and broad appeal should still support demand among shoppers looking for a refined used luxury sedan.

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:

• 37.9% of listings are priced as good or great deals.
• At 62.9% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 8.33% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $20,933, the 2019 costs more than the current year's $16,132 average.
• It brings a redesigned cabin with a more modern interface and updated tech.

The bottom line: If you want the better value today, 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 design and updated technology, the 2019 is the better upgrade path. For price-sensitive buyers, the 2018 is the one to watch first.

How does the 2018 Audi A6 compare to the 2018 Mercedes-Benz E-Class?

These recommendations are based on CarGurus' proprietary market data from November 10, 2026, CarGurus experts' opinions, and generative AI.