Used 2018 Audi S4 for Sale near New Jersey

How much does the 2018 Audi S4 cost?

Prices have softened 4.69% compared to this time last year, making it a favorable time to shop this model year.

There are 147 listings available, which suggests you have a workable amount of inventory to compare.

If you find a listing below $22,856.28, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2018 Audi S4 a good car?

Yes — the 4.67/5 user rating points to strong owner satisfaction. The 2018 Audi S4 stands out as a performance sedan that blends strong straight-line speed with everyday usability, and it pairs that pace with standard all-wheel drive and a smooth ride for a performance car. It also brings Audi’s Virtual Cockpit and Google navigation, which help give the cabin a modern, tech-forward feel. If you want a quick luxury sedan that is fast, well equipped, and easy to live with, this model year fits that use case well. 36.7% of listings are priced as good or great deals, which gives you some room to shop selectively.

Is the 2018 Audi S4 reliable?

Owners rate it 4.67/5, a strong signal of long-term satisfaction. The 2018 S4 is described as balanced and refined, with standard all-wheel drive and a strong powertrain that should make it feel capable in all conditions. Its appeal comes from that mix of performance and everyday usability rather than from being a hard-edged sports sedan. For used buyers, the main long-term ownership risk is that a performance luxury car can be more sensitive to maintenance history and prior use, so condition matters a lot.

What should I look for when buying a used 2018 Audi S4?

At 72.8% 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 confirm the car’s condition matches the listing. Focus on signs of prior damage, uneven wear, and any evidence that the car has been driven or maintained inconsistently. Because this is a performance sedan, you’ll want to pay close attention to how cleanly it drives and whether the interior and mechanical condition support the asking price.

Is now a good time to buy a used 2018 Audi S4?

This looks like a moderate, selective buyer’s market, so you can shop carefully without rushing every listing.

• Deal availability: 36.7% of listings are priced as good or great deals.
• Inventory: There are 147 listings available.
• Price trend: Prices have softened 4.69% compared with last year.
• Clean inventory: 72.8% of listings are accident-free.

If you find a listing below $22,856.28, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 Audi S4's resale value?

The current average of $23,837 sits slightly below last year's $25,010.

That price movement suggests the market has eased, which can help you buy at a more favorable entry point today. For a future seller, that also means resale value will depend heavily on how well you preserve the car’s condition and how competitively you price it later. A clean history and strong maintenance records should matter more when you eventually go to sell.

Vehicles with strong owner satisfaction ratings, like this model year's 4.67/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 Audi S4 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:

• 36.7% of listings are priced as good or great deals.
• At 72.8% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 4.69% compared with last year.
• Owners rate it 4.67/5 — a strong satisfaction signal.

The bottom line: You should start with the 2018 if you want the strongest mix of performance, standard all-wheel drive, and everyday usability in this price band. If you’re especially price-sensitive, a nearby model year may be worth comparing for a better deal or cleaner history, but the 2018 remains a solid primary target when you find one with a good record and a fair asking price.

These recommendations are based on CarGurus' proprietary market data from September 4, 2026, CarGurus experts' opinions, and generative AI.