2021 Mazda CX-30 Service and Repair Manual
This 2021 Mazda CX-30 factory service and repair manual is built around the specific engine and trim combination under your hood, so the torque values, clearances, and diagnostic steps you pull from it are the ones Mazda published for that exact configuration, including the naturally aspirated 2.5L L4 (VIN L and VIN M) and the turbocharged 2.5L L4 (VIN Y) fitted across the lineup.
Engines covered
- 2.5L inline-four (152 cu in) — DOHC, turbocharged, gasoline
- 2.5L inline-four (152 cu in) — DOHC, naturally aspirated, gasoline
- 2.0L inline-four (122 cu in) — DOHC, naturally aspirated, 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. No recalls or complaints are on federal record for the 2021 CX-30.
With seven distinct trims and a naturally aspirated engine alongside the turbo VIN Y variant, this manual keeps every service step matched to the specific CX-30 in your driveway.
Mazda North American Operations (Mazda) is recalling certain 2021 Mazda3 and CX-30 vehicles. Air may suddenly leak from the tire air valve.
A sudden air leak from the tire air valve may cause a loss of vehicle control while driving, increas
Mazda will notify owners, and dealers will replace all four tire air valves with new parts, free of
Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-30 vehicles. When fully opened, the power liftgate may partially lower unexpectedly when the vehicle is parked facing uphill
If the power liftgate unexpectedly lowers while a person is accessing the rear storage area of the v
Mazda will notify owners, and dealers will update the power liftgate control module software and ins
This service alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-047/25 10/07/25 DESCRIPTION When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to
This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-011/25 10/16/25 and 02/27/25 DESCRIPTION Some customers will report that their fuel door (AKA, fuel filler door, fuel lid, and fuel-filler lid) wa
DESCRIPTION Some customers may complain that the seat warmer does not operate when turning the ignition on while the seat is warm but when turning the ignition off then on again, the seat warmer begins to operate appropriately. DTCs B1030:1
Valve Stem Seals Class Action Settlement Program for Excessive Oil Consumption and Oil Consumption Powertrain Warranty Extension Special Service Program SSPD5. Updated April 28, 2026 Related oil part number for warranty claims is now 0000-7
DESCRIPTION Some vehicles may require the replacement of a damaged VIN plate or vehicle certification label. To obtain a replacement VIN plate (bulkhead-mounted and visible through the lower-left area of the windshield), contact DAG (Dealer
This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all ma
This SA supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. SA-007/25 10/22/25, 06/02/25 and 02/03/25 DESCRIPTION The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8
This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/19 DESCRIPTION If an engine assembly is replaced after a catastrophic internal mechanical failure, cl
Showing the 8 most recent of 596 technical service bulletins on file with NHTSA.
The contact owned a 2021 Mazda CX-30. The contact stated that her husband was driving 60 mph on cruise control and while approaching a traffic light he depressed the brake pedal but failed to deactiva
Involved in an accident low speed on 3/17/23. Upon impact with other car passengers seat belt did not activate until passenger hit dash with her head and then it apparently engaged and threw passenger
I was involved in a traffic accident on 6/29/23 involving myself and my [xx] year old son, both in the front seat. We were struck in the back by one vehicle, spun out of control, hit another vehicle o
The contact owned 2021 Mazda CX-30. The contact stated while attempting to park the vehicle in the parking garage at her workplace, the contact reversed and then straightened the steering wheel; howev
The contact owned 2021 Mazda CX-30. The contact stated while attempting to park the vehicle in the parking garage at her workplace, the contact reversed and then straightened the steering wheel; howev
Showing the 5 most serious of 130 complaints filed with NHTSA.
