BMW 3 Series 68·Mercedes-Benz C-Class 51on the MotiveGrid Score·BMW 3 Series about $3,022 less over 5 years
The verdict
The 2026 BMW 3 Series is the cheaper one to own — roughly $3,022 less over five years, thanks to cheaper insurance.
The BMW 3 Series is the stronger all-round pick here — cheaper to own with little given up in return.
Last updated July 2026 · National-average estimates
BMW 3 Series vs. Mercedes-Benz C-Class
MotiveGrid scores, key specs, and five-year cost comparison: 2026 BMW 3 Series versus 2026 Mercedes-Benz C-Class.
Metric
BMW 3 Series
Mercedes-Benz C-Class
MotiveGrid Score
68
51
Cost of Ownership
56
52
Powertrain
64
41
Driver Assistance
6
0
Livability
61
46
Safety
95
88
5-Year Cost to Own
$66,602
$69,625
Depreciation (5-yr)
$25,968
$26,861
Fuel / Energy (5-yr)
$9,942
$9,889
Insurance (5-yr)
$16,580
$18,480
Maintenance (5-yr)
$4,080
$4,080
Tires (5-yr)
$1,550
$1,550
Financing (5-yr)
$7,222
$7,470
Registration (5-yr)
$1,260
$1,295
Starting Price
$48,000
$49,650
Horsepower
255 hp
255 hp
MPG (combined)
35 mpg
30 mpg
Cargo volume
16.9 cu ft
11.6 cu ft
Seating
5
5
Towing capacity
3,500 lbs
—
Drivetrain
RWD
RWD
Gas
2026$48,000
MSRP
$48,000
Mo · 5yr
$1,110
$66,602 / 5 years
Best for long-term savings
Gas
2026$49,650
MSRP
$49,650
Mo · 5yr
$1,160
$69,625 / 5 years
Best on balance
VS
01 · The MotiveGrid Score
Five measured pillars, weighted into one score.
Cost, Powertrain, Driver Assistance, Livability, and Safety — each scored against its class, then combined into a single MotiveGrid Score. Built by our engineering team and benchmarked against independent sources like NHTSA, IIHS, and CarEdge. How it’s calculated →
BMW 3 Series scores higher overall.
BMW 3 Series
0
/ 100
Mercedes-Benz C-Class
0
/ 100
CostFive-year all-in cost to own, benchmarked against the class median.
3 Series
56
C-Class
52
Winner: 3 Series
$3,022 cheaper / 5 yrs
PowertrainEnergy efficiency paired with long-term ownership confidence.
3 Series
64
C-Class
41
Winner: 3 Series
+23 pts
Driver AssistHighway driving support, parking convenience, and hands-free automation.
3 Series
6
C-Class
0
Winner: 3 Series
+6 pts
LivabilityPassenger space, cargo room, and everyday maneuverability.
3 Series
61
C-Class
46
Winner: 3 Series
+15 pts
SafetyCrash-test protection plus standard crash-avoidance features.
BMW 3 Series is the better pick for long-term ownership — about $3,022 cheaper over 5 years with stronger fundamentals on running cost.
Mercedes-Benz C-Class still wins if your priority is best on balance.
Daily commuter
BMW 3 Series
Lowest energy cost per mile
Budget-focused
BMW 3 Series
Cheapest to own across 5 years
Family hauler
BMW 3 Series
Better safety rating with more cargo room
Highway driver
BMW 3 Series
Better adaptive cruise + lane keep
City driver
BMW 3 Series
Easiest to park and maneuver in tight spots
03
Cost of Ownership
Monthly running costs — national baseline.
Adjust for your situation
State
Miles/yr15,000
Loan rate7%
Down payment20%
BMW 3 Series
Monthly · 5-Year avg
$1,110
$66,602 total / 5 years
Total · monthly$1,110/mo
Mercedes-Benz C-Class
Monthly · 5-Year avg
$1,160
$69,625 total / 5 years
Total · monthly$1,160/mo
💡
On fuel + maintenance alone, the pricier Mercedes-Benz C-Class would need 154.3 years to recoup its $1,650 price premium ($11/yr in savings) — longer than most people own a car. Depreciation and insurance aren’t included in this payback view.
04
Frequently asked questions
BMW 3 Series comes out about $3,022 cheaper over 5 years on running costs (depreciation, fuel/energy, insurance, maintenance, financing). The gap shifts with your state, annual miles, and loan rate — use the "Adjust for your situation" panel above.
