Used 2018 BMW 4 Series for SaleNationwide

How much does the 2018 BMW 4 Series cost?

Prices have softened 5.03% compared to this time last year, making it a favorable time to shop this model year.

There are 873 listings available, which gives you a meaningful amount of inventory to compare.

Is the 2018 BMW 4 Series a good car?

Yes — 4.92/5 is a very strong user rating, and owners consistently praise the 2018 BMW 4 Series for its quality, performance, and luxury features. The review summary also points to a smooth ride, sporty handling, and useful equipment such as the sound system and navigation. For you, that means this model fits especially well if you want a premium car that balances style with everyday usability, including the coupe, convertible, and Gran Coupe body styles. With 35.1% of listings marked as good or great deals, you have a decent chance of finding a competitively priced example.

Is the 2018 BMW 4 Series reliable?

Owners rate it 4.92/5, a strong signal of long-term satisfaction.

The owner feedback also highlights a dependable-feeling ownership experience, with praise centered on quality and trouble-free enjoyment rather than frequent complaints. That said, BMW ownership can still bring higher repair exposure if maintenance has been deferred, so a well-documented service history matters more than usual for a used buyer. If you choose carefully, the long-term risk is less about the model’s appeal and more about the condition of the specific car you buy.

What should I look for when buying a used 2018 BMW 4 Series?

At 51.4% 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 confirm accident records, title status, and service history before you go any further. After that, prioritize a pre-purchase inspection, especially if you are considering a convertible or a higher-mileage example, because repair costs can rise quickly if hidden issues are present. Focus your condition check on signs of wear, roof operation if applicable, and overall maintenance quality rather than just the badge and trim level.

Is now a good time to buy a used 2018 BMW 4 Series?

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

• Deal availability: 35.1% of listings are priced as good or great deals.
• Inventory: There are 873 listings available.
• Price trend: Prices have softened 5.03% compared with last year.
• Clean inventory: 51.4% of listings are accident-free.

If you find a listing below $17,214, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 BMW 4 Series's resale value?

The current average of $17,563 sits slightly below last year's $18,494.

That price movement suggests the market has already adjusted downward, which can help you buy at a more favorable entry point today. For a future seller, it also means resale value will depend heavily on how well your car is maintained and how clean its history is. A well-kept example should hold up better than one with accident history or visible wear, especially because buyers in this segment tend to compare condition closely.

Vehicles with strong owner satisfaction ratings, like this model year's 4.92/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 BMW 4 Series 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 51.4% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 5.03% compared with last year.
• Owners rate it 4.92/5 — a strong satisfaction signal.

The bottom line: If you want the strongest balance of value, owner satisfaction, and current market softness, the 2018 is the primary year to target. If you are especially price-sensitive, you can widen your search to nearby years and compare condition, history, and asking price closely, but the 2018 already gives you a compelling mix of demand and discount potential.

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