Comparison · Reliability Ranked

BMW X5 vs Mercedes-Benz M-Class

Side-by-side reliability, price, and known-issue comparison for used-car buyers. Composite scores come from TÜV (Germany), ADAC (pan-European), NHTSA (US-sold variants), and DVSA MOT (UK inspections).

B

BMW X5

2015–2017
Reliability composite
74
/ 100
Good
ADAC + MOT + NHTSA
Estimated used price
€16,400–€25,700
Documented issues
2
• Transfer case (ATC450/700) failure — €1,800
• Air suspension bag rupture (rear) — €600
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⭐ Better composite reliability
M

Mercedes-Benz M-Class

2013–2015
Reliability composite
83
/ 100
Good
MOT
Estimated used price
€12,300–€30,000
Documented issues
0
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Bottom Line

The Mercedes-Benz M-Class wins on composite reliability across TÜV, ADAC, NHTSA, and DVSA MOT data — typically a sign of lower ownership risk and fewer recurring failure modes at age. The other car isn't necessarily wrong; check its issue list and price-to-condition ratio before deciding.

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BMW X5 reliability
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Mercedes-Benz M-Class reliability