How much does the 2018 Audi S5 Sportback cost?

Prices have softened 9.04% compared to this time last year, making it a favorable time to shop this model year.

There are 205 listings available, which suggests you have a workable amount of inventory to compare.

If you find a listing below $23,865.07, that's toward the low end of the year-round range and worth acting on quickly.

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, and luxurious features. The comfortable massage chairs also stand out as a recurring highlight, while the overall driving experience comes through as fast and engaging.

With 35.1% of listings marked as good or great deals, you have a meaningful chance to find a competitive price if you shop carefully.

Is the 2018 Audi S5 Sportback reliable?

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

The owner feedback also points to a dependable ownership experience, with praise centered on the car’s overall quality and performance. Some drivers mention minor startup hiccups and occasional inconsistencies in light features, but the broader pattern still leans positive.

For used buyers, that means the main long-term risk is less about broad reliability concerns and more about making sure any individual car has been maintained well and shows no unresolved small issues.

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

At 71.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should run a vehicle history report before you commit, then prioritize a pre-purchase inspection so you can catch hidden damage or repair quality issues. Focus closely on startup behavior, lighting functions, and overall cosmetic and mechanical condition, since those are the kinds of details that can separate a clean example from a problem car.

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

This looks like a moderate, selective buyer’s market, so you can shop with some leverage if you stay disciplined.

• Deal availability: 35.1% of listings are priced as good or great deals.
• Inventory: There are 205 listings available.
• Price trend: Prices have softened 9.04% compared with last year.
• Clean inventory: 71.2% of listings are accident-free.

If you find a listing below $23,865.07, 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 $24,253 sits slightly below last year's $26,663.

That softer pricing suggests future sellers may need to be realistic if they want to move the car quickly. If the market stays selective, well-kept examples should still stand out, but average-condition cars may face more pressure on asking price.

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:

• 35.1% of listings are priced as good or great deals.
• At 71.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 9.04% compared with last year.
• Owners rate it 4.83/5 — a strong satisfaction signal.

The bottom line: If you want a year with strong owner satisfaction and a softer price trend, the 2018 is a sensible place to focus. If you're especially price-sensitive, you should still compare nearby years and prioritize the cleanest, best-documented example rather than chasing the lowest sticker price alone.

These recommendations are based on CarGurus' proprietary market data from August 21, 2026, CarGurus experts' opinions, and generative AI.