Used 2018 Audi S5 Sportback for SaleNationwide

How much does the 2018 Audi S5 Sportback cost?

Prices have softened 10.43% compared to this time last year, making it a favorable time to shop this model year.

There are 191 listings available, which gives you a modest amount of inventory to compare.

Is the 2018 Audi S5 Sportback a good car?

Yes — the 4.83/5 user rating points to strong owner satisfaction. Owners consistently praise its eye-catching design, impressive performance, fast speed, and luxurious features, including comfortable massage chairs. The main drawbacks mentioned are minor startup hiccups and some inconsistencies in light features. With 36.1% of listings marked as good or great deals, you have some room to shop selectively.

Is the 2018 Audi S5 Sportback reliable?

Owners rate it 4.83/5, a strong signal of long-term satisfaction.

The owner feedback points to a car that many drivers feel good about living with over time, especially when it comes to dependable enjoyment and overall confidence in the vehicle. The mention of minor startup hiccups and light-feature inconsistencies suggests you should pay close attention to how the car behaves in daily use. For used buyers, that means long-term ownership risk looks manageable, but a careful pre-purchase check still matters.

What should I look for when buying a used 2018 Audi S5 Sportback?

At 68.6% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should start with a vehicle history report so you can separate clean examples from cars with prior damage. Then prioritize a thorough inspection, especially for startup behavior and electrical or lighting functions, since those are the kinds of issues owners have flagged. Focus on overall condition and maintenance evidence, because a well-kept example is likely to be the better buy.

Is now a good time to buy a used 2018 Audi S5 Sportback?

This is a moderate market, so you can be selective without expecting every listing to be a bargain.

• Deal availability: 36.1% of listings are priced as good or great deals.
• Inventory: There are 191 listings available.
• Price trend: Prices have softened 10.43% compared with last year.
• Clean inventory: 68.6% of listings are accident-free.

If you find a listing below $23,793, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 Audi S5 Sportback's resale value?

The current average of $23,924 sits slightly below last year's $26,710.

That softer pricing suggests the model has already absorbed some depreciation, which can help future resale stability if you buy at the right number. If you purchase near the lower end of the current range, you may reduce the risk of taking an immediate value hit. Strong condition and clean history should matter more than ever if you want to protect your exit price later.

Vehicles with strong owner satisfaction ratings, like this model year's 4.83/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 Audi S5 Sportback 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:

• 36.1% of listings are priced as good or great deals.
• At 68.6% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 10.43% compared with last year.
• Owners rate it 4.83/5 — a strong satisfaction signal.

The bottom line: The 2018 is a solid choice if you want a well-liked model year with softer pricing and enough inventory to shop carefully. If your priority is stretching your budget, this year looks especially appealing when you can find a clean, well-priced example. If you want the safest path, focus on the best-documented car rather than simply the cheapest one.

These recommendations are based on CarGurus' proprietary market data from September 29, 2026, CarGurus experts' opinions, and generative AI.