Cross-brand
Mercedes GLC vs BMW X3
Premium midsize SUV comparison covering diesel choices, 4Matic and xDrive, automatic gearboxes, suspension wear, and electronics.
Mercedes-Benz GLC
68
/ 100
BMW X3
68
/ 100
Best used buy
BMW X3
X3 for balanced dynamics and strong B47/B48 options; GLC when comfort matters more and 9G-Tronic and emissions records are complete.
Both are capable family SUVs. The X3 wins narrowly, but tire matching, transfer-case behavior, diesel usage, and service proof decide the real result.
Key differences
- X3 feels more driver-focused.
- GLC usually delivers the softer ride.
- xDrive and 4Matic dislike tire mismatch and neglected fluids.
- Both have costly diesel emissions and cooling-system exposure.
Buyer advice
- Check all four tires for matching brand, model, and tread depth.
- Test tight turns for drivetrain binding.
- Inspect panoramic roofs and rear cargo areas for moisture.
Red flags
- Transfer-case shudder
- 9G-Tronic flare
- AdBlue faults
- Coolant leaks
- Panoramic-roof water ingress