2023 Mazda CX-5 Problems: 1 Issues Every Owner Should Know
2023 model year · 2,100+ owner reports · Updated April 2026
According to Au7o's analysis of 2,100+ owner reports, the 2023 Mazda CX-5 has 1 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is Carbon Buildup on Intake Valves (Skyactiv) with 2,100 owner reports. Across all issues, repair costs range from $0 to $0. DIY maintenance guides at au7o.io.
All 1 Known Issues
On the 2013-2023 Mazda CX-5, direct-injection Skyactiv engines accumulate carbon deposits on intake valves due to oil vapors from the PCV system. Without port injection to clean valves, carbon can fuse to valve surfaces over time, typically appearing around 65,000+ miles.
Common Symptoms
- Rough idle and engine misfires
- Reduced power and poor fuel economy
- Check engine light with misfire codes
- Symptoms typically appear around 65,000+ miles
How to Fix
Walnut blasting intake valves to remove carbon deposits. Preventive maintenance using fuel additives (Techron, Sea Foam, Lucas) every 5,000-10,000 miles can help reduce buildup.
What Owners Are Using
Parts and tips from 2,100+ owners who fixed this issue
- UpgradeUse Top Tier gasoline to reduce carbon formation
- UpgradeAdd fuel system cleaner (Techron, Sea Foam) every 5,000 miles
- UpgradeConsider catch can installation to reduce oil vapor
- TipWalnut blasting every 60,000-80,000 miles as preventive maintenance