Mercedes-Benz GLC 250d 4MATIC vs BMW X3
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).
M
Mercedes-Benz GLC 250d 4MATIC
2017–2017
Reliability composite
52
/ 100
Below avg
NHTSA
Estimated used price
€11,400–€11,400Documented issues
0
⭐ Better composite reliability
B
BMW X3
2015–2017
Reliability composite
75
/ 100
Good
ADAC + MOT + NHTSA
Estimated used price
€11,700–€17,000Documented issues
0
Bottom Line
The BMW X3 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.