Mercedes-Benz CLS 300 vs BMW 840i — full comparison

Mercedes-Benz CLS 300

Coupe · Diesel

vs

BMW 840i

Coupe · Gasoline

Mercedes-Benz CLS 300

Car A

Mercedes-Benz CLS 300

Efficient for its class yet quick, the Mercedes-Benz CLS 300 diesel suits premium buyers who cover long highway miles and need real luggage space. Less compelling if you want winter-ready traction or SUV-like family flexibility.

5 seatsCoupeDiesel5.5 L/100km

BMW 840i

Car B

BMW 840i

A premium coupe that blends 340 hp pace with usable four‑seat, 440 L practicality. Best for drivers who value performance and road‑trip versatility over urban convenience.

4 seatsCoupeGasoline5-star safety340 hp

Why compared cross branddifferent powertrainsame body typesame usage profile

Usage fit

Family 25 / 47

City 27 / 18

Budget / value 34 / 37

Road trip 41 / 54

Performance 39 / 40

Cargo 30 / 22

Practical 27 / 31

Premium 54 / 67

Winter 18 / 30

Scores out of 100. Blue = Mercedes-Benz CLS 300 · Orange = BMW 840i

Specs side-by-side

Spec Mercedes-Benz CLS 300 BMW 840i

Values are representative — confirm for your market and trim.

Pros & cons

Mercedes-Benz CLS 300

Efficient for its class at 5.5 L/100 km for long commutes and road trips
Strong acceleration (0–100 km/h in 5.8 s) with 272 hp for confident overtakes
Spacious 550 L trunk supports weekend luggage and business travel
Five-seat capacity adds day-to-day practicality in a premium model
Around 70,000 places it firmly in the premium price bracket
Drive type not listed; confirm availability if you require winter-ready AWD
Diesel powertrain may be less suited to mostly short, stop‑start urban use
SUV alternatives offer easier access and family-focused versatility than cars in this segment

BMW 840i

4.6 s 0–100 km/h and 340 hp enable confident passing and highway merging
Four seats and a 440 L trunk suit weekend getaways and longer trips
Ranks well for safety in its class
Good value in its segment at a listed price of 85,000
Two doors make rear‑seat access less convenient for families
9.2 L/100 km combined consumption isn’t ideal for heavy stop‑go commuting
Not optimized for tight city driving or frequent parking maneuvers
Cargo flexibility is limited versus SUVs and hatchbacks despite trunk size

Verdict

Pick Mercedes-Benz CLS 300 if…

Best fuel economy

Mercedes-Benz CLS 300 uses 5.5 L/100km vs 9.2 — a meaningful saving if you cover high mileage.

Pick BMW 840i if…

More power

BMW 840i puts out 340 hp vs 272 — meaningfully quicker and more confident on motorways.

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