Used 2021 BMW 3 Series for Sale near Thornhill, ON

How much does the 2021 BMW 3 Series cost?

Prices have softened 12.48% compared to this time last year, making it a favourable time to shop this model year.

There are 142 listings available, which suggests you have a solid amount of inventory to compare.

Is the 2021 BMW 3 Series a good car?

Yes — the 2021 BMW 3 Series earns a 5/5 user rating, and owners consistently praise its exceptional handling, powerful performance, and luxurious interior. The review summary also points to strong safety features, plus fuel economy and trunk space as welcome strengths. That makes it a compelling fit if you want a premium sedan that can serve as a refined daily driver while still offering a broad range of powertrains for different needs. The market also shows 33.8% of listings as good or great deals, which gives you some room to shop selectively.

Is the 2021 BMW 3 Series reliable?

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

The review summary describes the car as dependable in the ways that matter most to owners, with praise centred on its strong overall ownership experience and confidence-inspiring performance. It also highlights the kind of trouble-free appeal shoppers often want from a premium sedan, especially when they plan to keep the car for the long term. For used buyers, the main ownership risk is that a luxury car can become costly if maintenance or repairs start to stack up over time.

Is now a good time to buy a used 2021 BMW 3 Series?

This looks like 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 142 listings available.
• Price trend: Prices have softened 12.48% compared with last year.

If you find a listing below $32,346 CAD, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 BMW 3 Series' resale value?

The current average of $33,434 CAD sits slightly below last year's $38,201 CAD.

That softer pricing can help you buy in at a more favourable point, but it also means future resale expectations should stay grounded. If you purchase near the current average and keep the car in strong condition, you may be better positioned than someone who pays closer to the top of the range. Demand should remain supported by the model’s broad appeal, especially among shoppers who value a premium badge and a sporty driving feel.

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

Should I buy a 2021 BMW 3 Series 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:

• 33.8% of listings are priced as good or great deals.
• Price trend: Prices have softened 12.48% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.

Consider the 2020 if:

• At $33,501 CAD, the 2020 costs more than the current year's $33,434 CAD average.
• It offers a well-rounded, fun-to-drive premium sedan with strong everyday polish.

Consider the 2022 if:

• At $34,112 CAD, the 2022 costs more than the current year's $33,434 CAD average.
• It keeps the familiar formula with only minor equipment updates.

The bottom line: The 2021 is the best primary path if you want strong owner satisfaction and a softer price than nearby years. If you are especially price-sensitive, the 2020 is worth a look, but the 2021 gives you the cleaner value story right now.

How does the 2021 BMW 3 Series compare to the 2021 Audi A4?

Read our full side-by-side expert comparison here.

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