As of September 2026, CarSearch.Pro's True Value model estimates a typical BMW M3 (G80) M3 CS is actually worth $69,700 (fair range $61,300 to $78,000). Unlike the median asking price shown above, True Value is anchored to 34 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 $81,200 — about 16% above what these cars have actually been selling for. That gap favors patient buyers: negotiate from the sold data, not the ask.
As of September 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 $69,995 and $79,990. M3 CS prices have increased 2.1% over the past quarter, from a median sale price of $78,330 to $79,995.
The typical M3 CS on the market has 29,925 miles. Listings spend an average of 47 days on market before selling or being removed.
Current M3 CS Pricing
A fair price for a BMW M3 (G80) M3 CS in September 2026 is between $69,995 and $79,990 (25th to 75th percentile). Prices range from $61,700 to $82,220 across 1,000 active listings.
Price Distribution (1,000 Active Listings)
Percentile
Price
Meaning
10th
$61,700
Budget / project cars
25th
$69,995
Below average price
Median (50th)
$75,995
Typical market price
75th
$79,990
Above average / premium
90th
$82,220
Top tier / low miles / rare spec
The average asking price is $72,460, 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
67
$79,373
10,000 - 25,000 mi
308
$78,495
25,000 - 50,000 mi
486
$74,999
50,000 - 100,000 mi
123
$68,995
100,000 - 150,000 mi
2
$64,589
Over 150,000 mi
2
$18,500
M3 CS Price Trends
BMW M3 (G80) M3 CS prices have increased 2.1% over the past quarter. In 2026-Q3, the median sale price was $79,995 across 37 sales, up from $78,330 in 2026-Q2.
On a year-over-year basis, M3 CS prices are down 6.9% ($79,995 vs. $85,895 a year ago).
M3 CS Quarterly Sale Prices (Historical)
Quarter
Sales
Median Price
Average Price
2024-Q4
13
$79,995
$79,594
2025-Q1
26
$85,990
$84,952
2025-Q2
33
$79,995
$83,980
2025-Q3
62
$85,895
$85,124
2025-Q4
96
$84,995
$86,047
2026-Q1
36
$84,998
$86,068
2026-Q2
32
$78,330
$77,258
2026-Q3
37
$79,995
$82,438
Best Value M3 CS by Model Year
The 2021 M3 CS offers the best value with a median price of $69,995 across 222 listings. The most expensive model year is 2024 at a median of $79,500.
Median Price by Model Year
Year
Listings
Median Price
Min
Max
2021
222
$69,995
$2,700
$82,181
2022
272
$73,048
$2,500
$84,000
2023
321
$78,999
$3,000
$84,220
2024
185
$79,500
$5,000
$84,243
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 13,728 miles:
Odometer (approx.)
Value Multiplier
Implied Value
946 mi
1.36x
$95,116
4,908 mi
1.22x
$85,238
11,331 mi
1.06x
$73,993
22,732 mi
0.96x
$67,213
35,522 mi
0.91x
$63,341
63,246 mi
0.85x
$59,095
99,500 mi
0.73x
$50,848
154,919 mi
0.65x
$45,441
300,000 mi
0.58x
$40,460
Low-mileage examples carry a real premium in this market: around 946 miles, cars trade at roughly 1.36x 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
↓ DOWN
54%
volatile
81% over 16 tests
12 months
↑ UP
47%
volatile
60% over 10 tests
24 months
↑ UP
47%
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 176 active listings, followed by CA (127), NJ (90), GA (88), TX (78).
Regional pricing varies significantly. The lowest median price is in UT at $63,995, while WI has the highest at $83,987. Buyers willing to travel or arrange transport may find savings of $19,992.
Top States by Inventory
State
Listings
Median Price
FL
176
$75,091
CA
127
$77,098
NJ
90
$75,452
GA
88
$74,986
TX
78
$79,939
IL
70
$78,403
AZ
66
$79,999
NY
48
$80,059
MA
27
$79,985
OH
20
$73,428
M3 CS Market Velocity
BMW M3 (G80) M3 CS listings spend an average of 47 days on market. This is a slower market. Buyers have negotiating leverage, especially on listings that have been active for 60+ days. Sellers should consider competitive pricing from the start.
The median time on market is 33 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: $69,995 to $79,990. The median is $75,995. Anything below $69,995 is a strong value; above $79,990 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 $69,995, making it the most accessible entry point into M3 CS ownership.
Take your time, but don't delay: Average days on market is 47. You have some time to research, but the best deals still go fast.
Data sourced from 10 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.