2021 Mazda CX-30 Service and Repair Manual

This factory service and repair manual for the 2021 Mazda CX-30 documents three gasoline engines for the 4-door sport utility, all inline-fours with double overhead camshafts: a naturally aspirated 2.0L of 122 cubic inches, a naturally aspirated 2.5L of 152 cubic inches, and a turbocharged 2.5L of the same size. Its seven trims are 2.5 S, 2.5 Turbo, GS, GT, GX, i Grand Touring and I Sport. The manual pairs procedures, specifications and torque values for the engines with wiring diagrams and diagnostics, and it covers the fuel, ignition, cooling, transmission, brake, suspension, steering, electrical and body systems as well.

Engines covered

• 2.0L inline-four (122 cu in) — DOHC, naturally aspirated, gasoline
• 2.5L inline-four (152 cu in) — DOHC, naturally aspirated, gasoline
• 2.5L inline-four (152 cu in) — DOHC, turbocharged, gasoline

Body styles covered

• 4-door sport utility

Trims covered

• 2.5 S
• 2.5 Turbo
• GS
• GT
• GX
• i Grand Touring
• I Sport

Known issues on the 2021 CX-30. Two recalls apply to the 2021 CX-30, and owners have lodged 100 complaints. Certain 2021 CX-30 vehicles were recalled because air could escape suddenly from a tire air valve, which could cost the driver control; dealers replaced the tire air valves with new parts. The second covers certain vehicles whose power liftgate, fully opened with the car parked facing uphill, could lower partway without warning; dealers updated the liftgate control module software and checked the drive unit's serial number, replacing the unit where needed. Engine complaints number 49; 10 reported a crash and 7 an injury. Tire, liftgate, engine and electrical procedures and diagnostics are in the manual.