As of October 2026, CarSearch.Pro's True Value model estimates a typical BMW M3 (G80) M3 CS is actually worth $69,800 (fair range $61,400 to $78,100). Unlike the median asking price shown above, True Value is anchored to 39 recent confirmed sales, normalized for mileage, and blends auction hammer prices (grossed up for buyer's premium) with real-world asking behavior.
Sellers are currently asking a median of $88,000 — about 26% above what these cars have actually been selling for. That gap favors patient buyers: negotiate from the sold data, not the ask.
As of October 2026, the BMW M3 (G80) M3 CS market has 1,000 active listings across 14 marketplaces tracked by CarSearch.Pro. The median asking price is $75,995, with the middle 50% of listings priced between $69,960 and $79,988. M3 CS prices have increased 1.2% over the past quarter, from a median sale price of $84,995 to $85,975.
The typical M3 CS on the market has 30,083 miles. Listings spend an average of 21 days on market before selling or being removed.
Current M3 CS Pricing
A fair price for a BMW M3 (G80) M3 CS in October 2026 is between $69,960 and $79,988 (25th to 75th percentile). Prices range from $63,895 to $81,998 across 1,000 active listings.
Price Distribution (1,000 Active Listings)
Percentile
Price
Meaning
10th
$63,895
Budget / project cars
25th
$69,960
Below average price
Median (50th)
$75,995
Typical market price
75th
$79,988
Above average / premium
90th
$81,998
Top tier / low miles / rare spec
The average asking price is $73,950, which is lower than the median, suggesting pricing is relatively symmetrical across the market.
Price by Mileage
Mileage Range
Listings
Median Price
Under 10,000 mi
87
$79,990
10,000 - 25,000 mi
283
$78,169
25,000 - 50,000 mi
471
$74,995
50,000 - 100,000 mi
147
$66,734
100,000 - 150,000 mi
6
$50,790
M3 CS Price Trends
BMW M3 (G80) M3 CS prices have increased 1.2% over the past quarter. In 2026-Q3, the median sale price was $85,975 across 55 sales, up from $84,995 in 2026-Q2.
On a year-over-year basis, M3 CS prices are down 0.6% ($85,975 vs. $86,500 a year ago).
M3 CS Quarterly Sale Prices (Historical)
Quarter
Sales
Median Price
Average Price
2024-Q4
13
$79,995
$79,594
2025-Q1
27
$85,990
$85,880
2025-Q2
37
$79,995
$84,101
2025-Q3
71
$86,500
$86,423
2025-Q4
113
$86,990
$87,732
2026-Q1
50
$88,923
$90,270
2026-Q2
49
$84,995
$84,025
2026-Q3
55
$85,975
$86,349
Best Value M3 CS by Model Year
The 2021 M3 CS offers the best value with a median price of $69,999 across 218 listings. The most expensive model year is 2027 at a median of $82,999.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
2021
218
$69,999
$31,780
$82,181
2022
218
$70,996
$29,000
$83,000
2023
311
$78,002
$54,895
$83,243
2024
151
$79,558
$19,000
$83,299
2025
77
$79,998
$20,500
$83,395
2026
21
$79,999
$36,500
$83,222
2027
4
$82,999
$74,995
$82,999
How Mileage Affects M3 CS Value
Most price guides assume value falls linearly with mileage. It doesn't. CarSearch.Pro learns the actual price-vs-mileage curve for the BMW M3 (G80) M3 CS from confirmed sales, referenced to a typical example at about 13,318 miles:
Odometer (approx.)
Value Multiplier
Implied Value
1,087 mi
1.32x
$92,424
4,971 mi
1.22x
$85,250
11,294 mi
1.05x
$73,531
22,240 mi
0.97x
$67,377
35,522 mi
0.91x
$63,175
63,246 mi
0.86x
$59,705
99,500 mi
0.72x
$50,532
154,919 mi
0.66x
$46,326
300,000 mi
0.58x
$40,552
Low-mileage examples carry a real premium in this market: around 1,087 miles, cars trade at roughly 1.32x the reference value. At the other end, 300,000-mile examples trade at about 0.58x. Implied values here are anchored to this market's True Value.
M3 CS Price Forecast
Horizon
Direction
Probability
Regime
Past Accuracy
6 months
→ FLAT
50%
volatile
71% over 17 tests
12 months
↓ DOWN
36%
volatile
82% over 11 tests
24 months
↑ UP
73%
volatile
insufficient history
These are probabilistic direction calls, not price targets. The "Past Accuracy" column is this model's real walk-forward record on the BMW M3 (G80) M3 CS — every month we re-run the forecast as if we only knew what was knowable then, and grade it against what actually happened. We publish the hit rate either way. Full methodology & track record →
Where to Buy a M3 CS
The highest concentration of BMW M3 (G80) M3 CS listings is in FL with 170 active listings, followed by CA (136), TX (81), GA (79), IL (76).
Regional pricing varies significantly. The lowest median price is in MI at $69,000, while TN has the highest at $83,096. Buyers willing to travel or arrange transport may find savings of $14,096.
Top States by Inventory
State
Listings
Median Price
FL
170
$77,900
CA
136
$78,169
TX
81
$79,833
GA
79
$76,548
IL
76
$76,353
NJ
57
$76,155
NY
53
$76,975
AZ
47
$79,991
WI
27
$81,249
OH
24
$77,434
M3 CS Market Velocity
BMW M3 (G80) M3 CS listings spend an average of 21 days on market. This represents moderate market velocity. Well-priced listings move quickly, but overpriced examples can sit. Buyers have time to be selective; sellers should price competitively.
The median time on market is 18 days. The lower median suggests most cars sell relatively quickly, while a smaller number of overpriced listings drag up the average.
M3 CS Buyer's Guide Summary
Fair price range: $69,960 to $79,988. The median is $75,995. Anything below $69,960 is a strong value; above $79,988 should be premium condition, low miles, or a desirable specification.
Prices stable: M3 CS values have been relatively flat. There is no urgency to time the market.
Best value year: The 2021 model year has the lowest median price at $69,999, making it the most accessible entry point into M3 CS ownership.
Act fast: With an average of 21 days on market, good examples sell quickly. Have financing arranged and be ready to move on a listing within days.
Data sourced from 11 marketplaces including eBay Motors, Bring a Trailer, Cars & Bids,
AutoTrader, CarGurus, Cars.com, Facebook Marketplace, Classic.com, and Hagerty Marketplace.
Updated daily by CarSearch.Pro's automated pipeline.
Browse all 1,000 active M3 CS listings.
Read the latest M3 CS market analysis.