Used 2018 BMW 3 Series for SaleNationwide

Compare 2018 BMW 3 Series Trims

The 2018 BMW 3 Series offers a range of trims from budget-friendly options to performance-oriented models, catering to various preferences and needs.

• Starting at $12,039
• Best MPG/MPGe: 66 city / 78 hwy
• Most Popular: 330i Sedan RWD

Trim Overview

Prices updated weekly from CarGurus listings.

Quick Compare Table

Listing prices sourced from CarGurus — updated weekly. OEM specs from manufacturer data.

Missing data displayed as "—".

Trim Deep Dives

320i Sedan RWD — "Who It's For"

The 320i Sedan RWD is the pick for shoppers who want a luxury sedan experience without paying for higher trims. It's the most budget-friendly option in the lineup.

• Avg. market price: $12,039 (updated weekly)
• MPG/MPGe: 24 city / 35 hwy
• Inventory: 358 listings
• View 320i Sedan RWD listings

320i xDrive Sedan AWD — "Who It's For"

The 320i xDrive Sedan AWD is the pick for shoppers who want all-wheel drive without a significant price increase. It offers solid features at a competitive price.

• Avg. market price: $13,117 (updated weekly)
• MPG/MPGe: 23 city / 34 hwy
• Inventory: 339 listings
• View 320i xDrive Sedan AWD listings

330i Sedan RWD — "Who It's For"

The 330i Sedan RWD is the pick for shoppers who want a blend of performance and luxury without stepping up to the higher trims. It's also the most popular trim in the lineup.

• Avg. market price: $13,974 (updated weekly)
• MPG/MPGe: 24 city / 34 hwy
• Inventory: 610 listings
• View 330i Sedan RWD listings

330i xDrive Sedan AWD — "Who It's For"

The 330i xDrive Sedan AWD is the pick for shoppers who want the performance of the 330i with the added benefit of all-wheel drive. It balances luxury and capability well.

• Avg. market price: $14,274 (updated weekly)
• MPG/MPGe: 23 city / 33 hwy
• Inventory: 598 listings
• View 330i xDrive Sedan AWD listings

328d xDrive Sedan AWD — "Who It's For"

The 328d xDrive Sedan AWD is the pick for shoppers who want a sportier drive with the benefits of diesel efficiency. It's a unique option in the lineup.

• Avg. market price: $15,667 (updated weekly)
• MPG/MPGe: 30 city / 40 hwy
• Inventory: 51 listings — lower availability; may limit negotiating room
• View 328d xDrive Sedan AWD listings

330e iPerformance Sedan RWD — "Who It's For"

The 330e iPerformance Sedan RWD is the pick for shoppers who want a hybrid option with excellent fuel economy. It combines luxury with efficiency.

• Avg. market price: $14,380 (updated weekly)
• MPG/MPGe: 66 city / 78 hwy
• Inventory: 83 listings — lower availability; may limit negotiating room
• View 330e iPerformance Sedan RWD listings

340i Sedan RWD — "Who It's For"

The 340i Sedan RWD is the pick for shoppers who want a powerful engine and luxury features without going for an AWD option. It's a strong performer in the lineup.

• Avg. market price: $24,700 (updated weekly)
• MPG/MPGe: 21 city / 32 hwy
• Inventory: 60 listings — lower availability; may limit negotiating room
• View 340i Sedan RWD listings

340i xDrive Sedan AWD — "Who It's For"

The 340i xDrive Sedan AWD is the pick for shoppers who want top-tier performance with all-wheel drive capability. It's ideal for those needing extra traction.

• Avg. market price: $27,037 (updated weekly)
• MPG/MPGe: 21 city / 31 hwy
• Inventory: 89 listings — lower availability; may limit negotiating room
• View 340i xDrive Sedan AWD listings

Trim Recommendations

Most Popular — 330i Sedan RWD

With 610 active listings, the 330i Sedan RWD is the clear volume leader in the lineup.

Browse 330i Sedan RWD listings

Best Budget Option — 320i Sedan RWD

At $12,039 avg market price — below the lineup median of $14,327 — it's the most accessible entry point.

Browse 320i Sedan RWD listings

Best for Fuel Economy — 330e iPerformance Sedan RWD

With an impressive MPG/MPGe of 66 city / 78 hwy, the 330e iPerformance Sedan RWD stands out for efficiency.

Browse 330e iPerformance Sedan RWD listings

These recommendations are based on CarGurus' proprietary market data from November 12, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2018 BMW 3 Series cost?

Prices have softened 6.29% compared to this time last year, making it a favorable time to shop this model year.

There are 1,223 listings available, which suggests you have a solid amount of inventory to compare.

Is the 2018 BMW 3 Series a good car?

Yes — the 4.5/5 user rating points to strong owner satisfaction. Owners consistently praise the impressive performance, smooth handling, and enjoyable driving experience, while the model’s use-case appeal comes through clearly if you want a used luxury sedan that feels engaging rather than merely comfortable. The market also shows 33.1% of listings as good or great deals, which gives you some room to shop selectively.

Is the 2018 BMW 3 Series reliable?

Owners rate it 4.5/5, a strong signal of long-term satisfaction.

The owner feedback points to a car that many drivers find dependable in day-to-day use, especially when it comes to the driving experience and overall ownership confidence. At the same time, this is still a complex luxury sedan, so long-term ownership risk can rise if maintenance history is weak or deferred.

What should I look for when buying a used 2018 BMW 3 Series?

At 54.7% 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, tire condition, and any signs of uneven wear or sensor issues. Because this model can be costly to maintain, prioritize examples with clean records and clear service documentation.

Is now a good time to buy a used 2018 BMW 3 Series?

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

• Deal availability: 33.1% of listings are priced as good or great deals.
• Inventory: There are 1,223 listings available.
• Price trend: Prices have softened 6.29% compared with last year.
• Clean inventory: 54.7% of listings are accident-free.

If you find a listing below $14,793, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2018 BMW 3 Series's resale value?

The current average of $14,793 sits slightly below last year's $15,786.

That price movement suggests the model has already absorbed some depreciation, which can help future sellers if they buy at the right price. If you keep the car in strong condition and maintain service records, you may be better positioned when it comes time to resell. Demand should remain supported by the model’s strong owner satisfaction and broad appeal among shoppers who want a sporty luxury sedan.

Vehicles with strong owner satisfaction ratings, like this model year's 4.5/5, tend to retain buyer demand, which supports resale value over time.

Should I buy a 2018 BMW 3 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:

• 33.1% of listings are priced as good or great deals.
• At 54.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 6.29% compared with last year.
• Owners rate it 4.5/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $19,981, the 2019 costs more than the current year's $14,793 average.
• It adds a sharper software-focused update and a more modern digital feel.

The bottom line: If you want the better value, the 2018 is the smarter starting point because it combines a lower average price with strong owner satisfaction and decent deal availability. If you’re willing to spend more for a newer-feeling cabin and updated tech, the 2019 is the better secondary path.

How does the 2018 BMW 3 Series compare to the 2018 Audi A4?

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