Used 2018 BMW 3 Series for Sale nearSeattle, WA

Compare 2018 BMW 3 Series Trims in Seattle, WA

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

• Starting at $10,495
• 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 the higher price tag.

• Avg. market price: $23,406 (updated weekly)
• MPG/MPGe: 24 city / 35 hwy
• Inventory: 36 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 capability without stepping up to a higher trim.

• Avg. market price: $18,995 (updated weekly)
• MPG/MPGe: 23 city / 34 hwy
• Inventory: 28 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 balance of performance and luxury without breaking the bank.

• Avg. market price: $10,495 (updated weekly)
• MPG/MPGe: 24 city / 34 hwy
• Inventory: 62 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 a sporty feel with the added benefit of all-wheel drive.

• Avg. market price: $15,480 (updated weekly)
• MPG/MPGe: 23 city / 33 hwy
• Inventory: 42 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 excellent fuel efficiency and all-wheel drive capability.

• Avg. market price: $16,036 (updated weekly)
• MPG/MPGe: 30 city / 40 hwy
• Inventory: 7 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 impressive fuel economy.

• Avg. market price: $14,999 (updated weekly)
• MPG/MPGe: 66 city / 78 hwy
• Inventory: 6 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 the highest price tag.

• Avg. market price: $23,406 (updated weekly)
• MPG/MPGe: 21 city / 32 hwy
• Inventory: 9 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 performance and all-wheel drive for enhanced handling.

• Avg. market price: $42,880 (updated weekly)
• MPG/MPGe: 21 city / 31 hwy
• Inventory: 15 listings — lower availability; may limit negotiating room
• View 340i xDrive Sedan AWD listings

Trim Recommendations

Most Popular — 330i Sedan RWD

With 62 active listings, the 330i Sedan RWD is the clear volume leader in the lineup.

Browse 330i Sedan RWD listings

Best Budget Option — 330i Sedan RWD

At $10,495 avg market price — below the lineup median of $17,515 — it's the most accessible entry point.

Browse 330i Sedan RWD listings

Best for Fuel Economy — 330e iPerformance Sedan RWD

With an impressive 66 city / 78 hwy MPG/MPGe, the 330e is the most fuel-efficient option.

Browse 330e iPerformance Sedan RWD listings

These recommendations are based on CarGurus' proprietary market data from September 24, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2018 BMW 3 Series cost?

Prices have softened 8.10% compared to this time last year, making it a favorable time to shop this model year.

There are 1,195 listings available, which gives you a solid amount of inventory to compare.

Is the 2018 BMW 3 Series a good car?

Yes — the 4.53/5 user rating points to strong owner satisfaction. Owners consistently praise the performance, ride quality, powerful acceleration, and smooth handling, while the 3 Series’ compact luxury-sedan format fits buyers who want a driver-focused car with a premium feel. If you want a businesslike luxury sedan that emphasizes driving enjoyment over maximum space, this model year lines up well with that use case. 33.8% of listings are priced as good or great deals, so you still have room to shop selectively.

Is the 2018 BMW 3 Series reliable?

Owners rate it 4.53/5, a strong signal of long-term satisfaction.

The owner feedback also points to a car that feels dependable in daily use, with praise centered on smooth handling and enjoyable performance over time. That said, the 3 Series is a complex luxury sedan, so long-term ownership risk for used buyers is tied more to maintenance and condition than to simple mileage alone.

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

At 59.7% 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 on any car that looks especially clean or unusually well priced. Focus on condition details that matter on a premium sedan, including signs of prior bodywork, tire and sensor issues, and evidence of deferred maintenance. Because ownership can be expensive, a well-documented service history is especially valuable.

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

This is a moderate, selective buyer’s market, so you can shop carefully without feeling rushed.

• Deal availability: 33.8% of listings are priced as good or great deals.
• Inventory: There are 1,195 listings available.
• Price trend: Prices have softened 8.10% compared with last year.
• Clean inventory: 59.7% of listings are accident-free.

If you find a listing below $14,746, 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 $15,096 sits slightly below last year's $16,426.

That softer pricing suggests the market has already adjusted downward, which can help you buy at a more favorable entry point. For a future seller, that also means resale value will depend heavily on condition, mileage, and documentation rather than just the badge alone. Well-kept examples should still attract interest, but you should expect buyers to be selective in a market where prices have eased.

Vehicles with strong owner satisfaction ratings, like this model year's 4.53/5, 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:

• 33.8% of listings are priced as good or great deals.
• At 59.7% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 8.10% compared with last year.
• Owners rate it 4.53/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $20,584, the 2019 costs more than the current year's $15,096 average.
• It adds a more modern software experience.

The bottom line: If you want the better value, the 2018 is the stronger starting point because it costs less and still delivers the core 3 Series experience. If you’re willing to pay more for a newer feel and updated software, the 2019 is the better secondary path.

These recommendations are based on CarGurus' proprietary market data from September 22, 2026, CarGurus experts' opinions, and generative AI.