Used 2018 BMW 3 Series for Sale nearMilwaukee, WI

Compare 2018 BMW 3 Series Trims in Milwaukee, WI

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 $12,312
• Best MPG/MPGe: 66 city / 78 hwy
• Most Popular: 330i xDrive Sedan AWD

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 experience without the higher price tag. It's a great entry point into the BMW lineup.

• Avg. market price: $23,024 (updated weekly)
• MPG/MPGe: 24 city / 35 hwy
• Inventory: 38 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 paying a premium. It's an affordable option for those in colder climates.

• Avg. market price: $12,312 (updated weekly)
• MPG/MPGe: 23 city / 34 hwy
• Inventory: 36 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 going overboard on price. It offers a solid mix of features.

• Avg. market price: $23,024 (updated weekly)
• MPG/MPGe: 24 city / 34 hwy
• Inventory: 73 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 confidence of all-wheel drive. It's the most popular trim for good reason.

• Avg. market price: $17,995 (updated weekly)
• MPG/MPGe: 23 city / 33 hwy
• Inventory: 82 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 diesel efficiency combined with all-wheel drive. It's a unique option in the lineup.

• Avg. market price: $23,024 (updated weekly)
• MPG/MPGe: 30 city / 40 hwy
• Inventory: 11 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 to maximize fuel efficiency with hybrid technology. It's a smart choice for eco-conscious drivers.

• Avg. market price: $23,024 (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. It's a solid performance option.

• Avg. market price: $23,024 (updated weekly)
• MPG/MPGe: 21 city / 32 hwy
• Inventory: 17 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 the most premium option in the lineup.

• Avg. market price: $30,895 (updated weekly)
• MPG/MPGe: 21 city / 31 hwy
• Inventory: 18 listings — lower availability; may limit negotiating room
• View 340i xDrive Sedan AWD listings

Trim Recommendations

Most Popular — 330i xDrive Sedan AWD

With 82 active listings, the 330i xDrive Sedan AWD is the clear volume leader in the lineup.

Browse 330i xDrive Sedan AWD listings

Best Budget Option — 320i xDrive Sedan AWD

At $12,312 avg market price — below the lineup median of $23,024 — it's the most accessible entry point.

Browse 320i xDrive Sedan AWD listings

Best for Fuel Economy — 330e iPerformance Sedan RWD

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

Browse 330e iPerformance Sedan RWD listings

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

How much does the 2018 BMW 3 Series cost?

Prices have softened 5.51% compared to this time last year, making it a favorable time to shop this model year.

There are 1,194 listings available, which gives you a solid pool of options 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 performance, ride quality, powerful acceleration, and smooth handling, which fits a sedan that is meant to feel engaging as well as premium. The overview also shows why it appeals to you if you want a compact luxury sedan with a practical side, since it offers a broad mix of engines, drivetrains, and transmissions. With 31.6% of listings marked as good or great deals, there is still meaningful market opportunity if you shop carefully.

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 daily use, especially when it comes to the driving experience and overall enjoyment. That said, the same feedback also hints that you should pay attention to wear items and ownership details, since some owners mention concerns around the tire sensor and the lack of a spare tire. For used buyers, the main long-term risk is less about the car’s appeal and more about how well it has been maintained over time.

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

At 56.2% 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 body, suspension, or repair issues. Focus closely on overall condition, maintenance records, and signs of uneven wear, since those details matter a lot on a premium sedan like this. If a car has prior damage, make sure the repairs were done cleanly and that the price reflects the history.

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 with some leverage if you stay disciplined.

• Deal availability: 31.6% of listings are priced as good or great deals.
• Inventory: There are 1,194 listings available.
• Price trend: Prices have softened 5.51% compared with last year.
• Clean inventory: 56.2% of listings are accident-free.

If you find a listing below $14,802, 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 $15,013 sits slightly below last year's $15,889.

That softer pricing suggests the model has already absorbed some depreciation, which can help future sellers if they buy at the right number. If you purchase near the lower end of the range and keep the car in strong condition, you may have a better chance of limiting your loss later. Demand should remain supported by the model’s strong owner satisfaction and broad appeal among shoppers who want a premium sport 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:

• 31.6% of listings are priced as good or great deals.
• At 56.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 5.51% compared with last year.
• Owners rate it 4.5/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $20,157, the 2019 costs more than the current year's $15,013 average.
• It adds a more advanced software experience.

The bottom line: You should start with the 2018 if you want the better value and are willing to inspect carefully. If you want the newer model’s upgraded software experience and can stretch your budget, the 2019 is the cleaner upgrade path. For price-sensitive buyers, the 2018 remains the smarter buy as long as you verify history and condition.

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

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