Audi A6 4.0 TDI vs BMW 540i — full comparison

Audi A6 4.0 TDI

Sedan · Diesel · AWD

BMW 540i

Sedan · Gasoline · FWD

Car A

Audi A6 4.0 TDI

A quick, long-range AWD V8 diesel aimed at premium buyers, pairing 4.4 s 0–100 km/h pace with an efficient 7 L/100 km. Seats five with a 530-liter trunk, making it ideal for road trips while being less compelling for city-first use.

5 seatsSedanDiesel5-star safety7 L/100kmAWD

Car B

BMW 540i

The BMW 540i is a premium saloon that blends 340 hp pace with five-seat comfort and a useful 530 L boot for family and road‑trip duty. It’s less compelling for cargo‑heavy or urban use, and its front‑wheel‑drive character may not suit enthusiasts.

5 seatsSedanGasoline5-star safety

Why compared cross branddifferent powertrainsame body typesame seatssimilar price

Usage fit

Family 63 / 65

City 32 / 30

Budget / value 44 / 45

Road trip 69 / 63

Performance 39 / 33

Cargo 29 / 29

Practical 45 / 45

Premium 65 / 65

Winter 70 / 30

Scores out of 100. Blue = Audi A6 4.0 TDI · Orange = BMW 540i

Specs side-by-side

Spec Audi A6 4.0 TDI BMW 540i

Values are representative — confirm for your market and trim.

Pros & cons

Audi A6 4.0 TDI

AWD traction for winter and mixed-road confidence on long trips
800 Nm torque and 4.4 s 0–100 km/h for effortless overtakes
Efficient for its class at 7 L/100 km, reducing fuel stops
Five seats and a 530 L trunk suit growing families and luggage
Weak fit for city driving per signals; shines more on open roads
Not built for cargo-heavy use despite a generous trunk
Premium price around 75,000 may exceed some budgets
Only five seats; no third row for larger families

BMW 540i

Strong performance (340 hp, 4.3 s 0–100 km/h) for confident passing and merging
Five seats and a 530 L trunk work well for growing families and road trips
Safety ranks highly in its positioning, aligning with family priorities
Efficient for its class at 8 L/100 km given the power on tap
Saloon body and boot opening limit bulky‑item versatility
Size and brisk responses are less at ease in tight city driving
8 L/100 km may feel high if most miles are short, stop‑start trips
Front‑wheel drive may not satisfy buyers seeking a rear‑biased feel

Verdict

Pick Audi A6 4.0 TDI if…

Best fuel economy

Audi A6 4.0 TDI uses 7.0 L/100km vs 8.0 — a meaningful saving if you cover high mileage.

Pick BMW 540i if…

Performance & capability

BMW 540i is the choice if you want more power, speed, or all-weather capability.

Usage fit

Specs side-by-side

Pros & cons

Audi A6 4.0 TDI

BMW 540i

Verdict

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