Used 2021 BMW X3 for Sale nearSaint Louis, MO

Compare 2021 BMW X3 Trims in Saint Louis, MO

The 2021 BMW X3 offers a range of trims from budget-friendly options to performance-oriented models, catering to various driving needs and preferences.

• Starting at $22,310
• Best MPG/MPGe: 59 city / 61 hwy
• Most Popular: xDrive30i 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

sDrive30i RWD — "Who It's For"

The sDrive30i RWD is the pick for shoppers who want a luxury SUV experience without the added cost of AWD. It's the best value option in the lineup.

• Avg. market price: $24,508 (updated weekly)
• MPG/MPGe: 25 city / 29 hwy
• Inventory: 213 listings — widest selection in the lineup
• View sDrive30i RWD listings

xDrive30i AWD — "Who It's For"

The xDrive30i AWD is the pick for shoppers who want all-wheel drive without breaking the bank. It's the most popular trim in the lineup.

• Avg. market price: $22,310 (updated weekly)
• MPG/MPGe: 23 city / 29 hwy
• Inventory: 371 listings — widest selection in the lineup
• View xDrive30i AWD listings

xDrive30e AWD — "Who It's For"

The xDrive30e AWD is the pick for shoppers who want a hybrid option with excellent fuel efficiency. However, availability may limit negotiating room.

• Avg. market price: $24,508 (updated weekly)
• MPG/MPGe: 59 city / 61 hwy
• Inventory: 13 listings — lower availability; may limit negotiating room
• View xDrive30e AWD listings

M40i AWD — "Who It's For"

The M40i AWD is the pick for shoppers who want a performance-oriented SUV with more power and luxury features. It's ideal for those seeking a sportier drive.

• Avg. market price: $35,500 (updated weekly)
• MPG/MPGe: 21 city / 27 hwy
• Inventory: 88 listings
• View M40i AWD listings

Trim Recommendations

Most Popular — xDrive30i AWD

With 371 active listings, the xDrive30i AWD is the clear volume leader in the lineup.

Browse xDrive30i AWD listings

Best Budget Option — xDrive30i AWD

At $22,310 avg market price — below the lineup median of $24,508 — it's the most accessible entry point.

Browse xDrive30i AWD listings

Best for Fuel Economy — xDrive30e AWD

With an impressive MPG/MPGe of 59 city / 61 hwy, the xDrive30e AWD is the most fuel-efficient option in the lineup.

Browse xDrive30e AWD listings

These recommendations are based on CarGurus' proprietary market data from September 2, 2026, CarGurus experts' opinions, and generative AI.

How much does the 2021 BMW X3 cost?

Prices have softened 10.69% compared to this time last year, making it a favorable time to shop this model year.

There are 2,191 listings available, which gives you a solid amount of inventory to compare before you buy.

If you find a listing below $24,033.07, that's toward the low end of the year-round range and worth acting on quickly.

Is the 2021 BMW X3 a good car?

Yes — the 2021 BMW X3 earns a 4.8/5 user rating and a 7.5/10 expert rating. The model scores 8/10 across Look and feel, Performance, Technology, and Safety.

Owners consistently praise its comfort, smooth ride, and strong performance, and they also call out the seats as a standout strength. The tech package is another recurring positive, especially for shoppers who want an upscale SUV that feels easy to live with.

The main trade-offs are price and practicality details: it sits on the expensive end of the segment, and some owners wish it had more interior storage and a few features found on rivals. That said, the X3’s spacious interior and engaging driving character make it a strong fit if you want a luxury crossover that balances daily usability with a more rewarding drive. With 34.2% of listings marked as good or great deals, there’s still room to shop selectively.

Is the 2021 BMW X3 reliable?

Owners rate it 4.8/5, a strong signal of long-term satisfaction.

Owner feedback points to a vehicle that feels dependable in everyday use, with praise centered on comfort, smooth ride quality, and strong performance over time. The expert notes also reinforce that it’s built around a practical, easy-to-use package, which helps support confidence for long-term ownership.

BMW’s standard maintenance and ownership experience still matter, so a used example with complete service records is the safer bet. For you, the biggest long-term risk is buying one that has been poorly maintained or lightly neglected.

What should I look for when buying a used 2021 BMW X3?

Accident-free inventory is solid at 83% — always verify the vehicle history report.

You should still run a history report on every candidate, even if the listing looks clean at first glance. Prioritize a pre-purchase inspection, especially if the vehicle has higher mileage or incomplete service records. Focus on overall condition, because the X3’s value depends heavily on how well it has been maintained and equipped.

Key things to evaluate:

• Trim level: The sDrive30i and xDrive30i come standard with 18-inch alloy wheels, push-button start, synthetic leather upholstery, tri-zone climate control, a 10.2-inch infotainment system, navigation, and 10-way power-adjustable front seats. The M40i adds 19-inch alloy wheels, 14-way power-adjustable front seats, unique exterior styling, and an M Sport suspension.
• Powertrain: The sDrive30i and xDrive30i use a turbocharged four-cylinder engine with 248 horsepower and an eight-speed automatic transmission. The xDrive30e plug-in hybrid makes 288 hp and offers 17 miles of electric-only range. The M40i uses a 382-hp twin-turbo inline-six.
• Safety package: Standard equipment includes automatic emergency braking, forward collision warning, pedestrian detection, lane departure warning, blind-spot monitoring, rear cross-traffic alert, and front-and-rear parking sensors. Adaptive cruise control, automatic high beams, headlights that bend with the road, and a head-up display are optional.
• Infotainment: You get a standard 10.2-inch touchscreen with iDrive, Apple CarPlay, and optional Android Auto. Wireless device charging, a fully digital instrument panel, and a 16-speaker Harman Kardon premium stereo are available.
• Fuel efficiency: The xDrive30e plug-in hybrid returns 30 MPGe in electric mode and 24 mpg in hybrid mode. The sDrive30i returns 25 mpg city, 29 mpg highway, and 27 mpg combined. The xDrive30i returns 23 mpg city, 29 mpg highway, and 25 mpg combined. The M40i returns 21 mpg city, 27 mpg highway, and 23 mpg combined.

Which 2021 BMW X3 trim should I buy?

The 2021 BMW X3 is offered in 4 trim levels: sDrive30i, xDrive30i, M40i, and xDrive30e plug-in hybrid.

Here's the short version:

• sDrive30i: This is the most affordable gas model and the best-value starting point if you want the X3’s core strengths without paying for extra drivetrain hardware. You still get the standard 10.2-inch infotainment system, navigation, synthetic leather upholstery, tri-zone climate control, and power-adjustable front seats.
• xDrive30i: Choose this if you want the same core equipment as the sDrive30i but prefer all-wheel drive. It’s the better pick if you live where weather or road conditions make AWD worth the extra cost.
• xDrive30e plug-in hybrid: This is the efficiency-focused choice, with 288 hp and 17 miles of electric-only range. It makes sense if you can regularly charge at home or work and want the most efficient version of the X3.
• M40i: This is the performance choice, with a 382-hp twin-turbo inline-six, more responsive cornering, and standard upgrades like 19-inch wheels, 14-way power front seats, unique styling, and an M Sport suspension. It’s the right pick if driving enjoyment matters most.

Standard safety equipment is strong across the lineup, while adaptive cruise control, automatic high beams, headlights that bend with the road, and a head-up display remain optional.

Is now a good time to buy a used 2021 BMW X3?

This is a moderate market for selective buyers, so you can shop carefully and still find worthwhile listings.

• Deal availability: 34.2% of listings are priced as good or great deals.
• Inventory: There are 2,191 listings available.
• Price trend: Prices have softened 10.69% compared with last year.
• Clean inventory: 83.0% of listings are accident-free.

If you find a listing below $24,033.07, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 BMW X3's resale value?

The current average of $24,328 sits slightly below last year's $27,240.

That price movement suggests the market has already adjusted downward, which can help you as a buyer today but may limit upside if you plan to resell soon. If you buy at the right price and keep the vehicle in strong condition, you can reduce the impact of further depreciation. The X3’s broad appeal and strong demand help support future resale, especially for well-equipped examples.

Vehicles with strong owner satisfaction ratings, like this model year's 4.8/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 BMW X3 safe?

It earns an 8/10 safety score from our experts.

Standard driver-assistance features include automatic emergency braking, forward collision warning, pedestrian detection, lane departure warning, blind-spot monitoring, rear cross-traffic alert, and front-and-rear parking sensors. Optional safety features include adaptive cruise control, automatic high beams, headlights that bend with the road, and a head-up display.

That gives you a strong safety baseline even before options, but you should still check whether a specific used example has the extra driver-assistance features you want.

Should I buy a 2021 BMW X3 or consider a different year?

If you're weighing the 2021 against nearby model years, here's how to think about it:

Choose the 2021 if:

• 34.2% of listings are priced as good or great deals.
• Accident-free inventory is solid at 83% — always verify the vehicle history report.
• Price trend: Prices have softened 10.69% compared with last year.
• Owners rate it 4.8/5 — a strong satisfaction signal.
• BMW adds more standard safety features and newly available in-car tech features this year.

Consider the 2022 if:

• At $28,929, the 2022 costs more than the current year's $24,328 average.
• It brings a substantial mid-cycle refresh with design tweaks, new engines, more technology, and an expanded safety suite.

The bottom line: If you want the better value, the 2021 is the smarter buy because pricing has softened and inventory is healthy. If you’re willing to spend more for a refreshed version with newer features, the 2022 is the better upgrade path. For price-sensitive buyers, the 2021 gives you the core X3 experience at a more attractive market price.

These recommendations are based on CarGurus' proprietary market data from September 4, 2026, CarGurus experts' opinions, and generative AI.