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 sportier models, catering to various preferences and driving needs.

• Starting at $12,441
• 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 high price tag. It's the most affordable option in the lineup.

• Avg. market price: $12,441 (updated weekly)
• MPG/MPGe: 24 city / 35 hwy
• Inventory: 325 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 paying a premium. It offers a solid balance of features and price.

• Avg. market price: $13,644 (updated weekly)
• MPG/MPGe: 23 city / 34 hwy
• Inventory: 348 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 going overboard on price. It’s a well-rounded choice.

• Avg. market price: $14,806 (updated weekly)
• MPG/MPGe: 24 city / 34 hwy
• Inventory: 608 listings
• View 330i Sedan RWD listings

328d Sedan RWD — "Who It's For"

The 328d Sedan RWD is the pick for shoppers who want excellent fuel efficiency with a diesel engine. It’s ideal for long-distance drivers.

• Avg. market price: $17,680 (updated weekly)
• MPG/MPGe: 31 city / 43 hwy
• Inventory: 39 listings — lower availability; may limit negotiating room
• View 328d Sedan RWD listings

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

The 330i xDrive Sedan AWD is the pick for shoppers who want sporty performance combined with all-wheel drive. It’s the most popular trim for good reason.

• Avg. market price: $16,542 (updated weekly)
• MPG/MPGe: 23 city / 33 hwy
• Inventory: 617 listings
• View 330i 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. It’s a great choice for eco-conscious drivers.

• Avg. market price: $14,251 (updated weekly)
• MPG/MPGe: 66 city / 78 hwy
• Inventory: 79 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. It’s perfect for performance enthusiasts.

• Avg. market price: $25,378 (updated weekly)
• MPG/MPGe: 21 city / 32 hwy
• Inventory: 56 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 a high-performance vehicle with all-wheel drive. It’s ideal for those who prioritize both power and control.

• Avg. market price: $28,455 (updated weekly)
• MPG/MPGe: 21 city / 31 hwy
• Inventory: 77 listings — lower availability; may limit negotiating room
• View 340i xDrive Sedan AWD listings

Trim Recommendations

Most Popular — 330i xDrive Sedan AWD

With 617 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 Sedan RWD

At $12,441 avg market price — below the lineup median of $15,674 — it's the most accessible entry point.

Browse 320i Sedan RWD listings

Best for Fuel Economy — 330e iPerformance Sedan RWD

The 330e iPerformance Sedan RWD offers exceptional fuel efficiency with 66 city / 78 hwy MPG/MPGe.

Browse 330e iPerformance Sedan RWD listings

These recommendations are based on CarGurus' proprietary market data from September 17, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2018 BMW 3 Series cost?

Prices have softened 7.70% compared to this time last year, making it a favorable time to shop this model year.

There are 1,174 listings available, which suggests you should have a reasonable number of options 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, which fits a compact luxury sedan built around driving enjoyment. The 2018 model also makes sense if you want a premium-feeling sedan with a driver-focused character and a broad mix of engines and drivetrains. With 33.3% of listings marked as good or great deals, there is still some room to shop selectively.

Is the 2018 BMW 3 Series reliable?

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

User feedback also points to a car that many owners feel good about living with over time, with comments centered on dependable performance, smooth handling, and an enjoyable driving experience. That said, the same feedback also hints that ownership can bring some compromises, so you should expect a used luxury sedan that rewards careful maintenance. For used buyers, the main long-term risk is paying for a complex car without a clear service history.

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

At 58.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.

You should run a vehicle history report on any promising listing and confirm whether prior damage was repaired properly. Put inspection priority on body panels, paint match, alignment, and signs of uneven wear that could point to past collision work. You should also focus on overall condition and maintenance records, since this is a complex luxury car where deferred upkeep can become expensive.

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

This is a moderate buyer’s market, so you can shop selectively and still find worthwhile listings.

• Deal availability: 33.3% of listings are priced as good or great deals.
• Inventory: There are 1,174 listings available.
• Price trend: Prices have softened 7.70% compared with last year.
• Clean inventory: 58.5% of listings are accident-free.

If you find a listing below $14,745, 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 $15,167 sits slightly below last year's $16,431.

That price movement 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 may depend heavily on condition, mileage, and documentation rather than just the badge alone. Well-kept examples should hold up better than neglected ones because buyers in this segment tend to be selective.

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:

• 33.3% of listings are priced as good or great deals.
• At 58.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
• Price trend: Prices have softened 7.70% compared with last year.
• Owners rate it 4.53/5 — a strong satisfaction signal.

Consider the 2019 if:

• At $20,655, the 2019 costs more than the current year's $15,167 average.
• It adds a more advanced software experience.

The bottom line: If you want the better value, the 2018 is the stronger starting point because it combines a lower average price with solid owner satisfaction. If you are willing to pay more for a newer-feeling digital experience, the 2019 is the better secondary path for buyers who prioritize updated tech over price.

These recommendations are based on CarGurus' proprietary market data from September 15, 2026, CarGurus experts' opinions, and generative AI.