2018 Renault Kadjar Problems: 2 Known Issues
2018 model year · 55+ owner reports · Updated September 2026
According to Au7o's analysis of 55+ owner reports, the 2018 Renault Kadjar has 2 documented known issues, with 2 rated critical. The most serious are DPF Regeneration Failure ($200-$2,000 repair) and Rear Door Child Safety Lock Can Come Loose Unnoticed — Recall 0D26 ($0-$0 repair). Across all issues with published estimates, repair costs range from $200 to $2,000. DIY maintenance guides at au7o.io.
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Frequently Asked Questions
What are the most common Renault Kadjar problems?
According to Au7o's analysis of 55+ owner reports, the 2018 Renault Kadjar has 2 documented issues. The most frequently reported are: DPF Regeneration Failure, Rear Door Child Safety Lock Can Come Loose Unnoticed — Recall 0D26. Of these, 2 are rated critical and should be addressed promptly.
Is the Renault Kadjar reliable?
The 2018 Renault Kadjar has 2 known issues documented across 55+ owner reports. 2 issues are rated critical: DPF Regeneration Failure and Rear Door Child Safety Lock Can Come Loose Unnoticed — Recall 0D26. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Renault Kadjar problems?
Repair costs for known Renault Kadjar issues range from $0 to $2,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, DPF Regeneration Failure, typically costs $200-$2,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2015-2022 Renault Kadjar DPF Regeneration Failure?
The Kadjar diesel models experience frequent DPF regeneration failures, particularly in vehicles used primarily for short urban commutes. The regeneration process requires sustained load that urban driving cannot provide. Repairs typically run $200-$2,000. Severity: high.
What is the 2015-2018 Renault Kadjar Rear Door Child Safety Lock Can Come Loose Unnoticed — Recall 0D26?
On Kadjars built at Palencia, Spain between 29 June 2015 and 2 March 2018, the child safety lock mechanism in the rear doors can work loose without the owner noticing. A parent who has set the child lock — and reasonably believes the rear doors cannot be opened from inside — can… Repairs typically run $0-$0. Severity: high.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.