One problem related to timing tensioner has been reported for the 2018 Mazda CX-5. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Mazda CX-5 based on all problems reported for the 2018 CX-5.
2018 Mazda Cx-5 grand touring. Alternator/ac serpentine belt tensioner leaks oil (its hydraulic) and if fails could cause belt to come off without warning and leave you stranded. Dealership indicates this is not warranted.