The 2021 Honda Civic belongs to the 10th generation (2016-2021), built with 2.0L naturally aspirated or 1.5L L15 turbo, with the Type R using a 2.0L K20C1. It takes 0W-20 full synthetic. Oil changes run 7,500 - 10,000 miles on the Maintenance Minder. This is the final model year of that generation, usually the most sorted version of the design before the redesign that followed.
A 2021 Honda Civic is 5 years old in 2026, which at an average 12,000 miles a year puts it around 60,000 miles - the interval that decides its future. At roughly 60,000 miles a vehicle enters the window that most separates the ones that reach 200,000 miles from the ones that do not. Keeping up with whatever its own manufacturer schedule calls for here is what avoids expensive failures later. This manufacturer schedules it by Maintenance Minder code rather than a fixed odometer number - the car itself decides the interval based on how it has been driven - so there is no single mileage to give here; see what is due at each mileage below for the typical points those codes appear.
The fault most worth knowing about on this generation is Infotainment complaints on earlier builds of this generation. Owners also report Fuel dilution of engine oil on the 1.5L turbo in cold-climate short-trip driving; and A/C condenser failures prompting extended warranty coverage. None of these are certainties on any individual vehicle - they are the patterns worth checking for when you buy or when a symptom appears.
Track your 2021 Honda Civic service history free with the ServiceSage maintenance tracker, or compare it against other model years on the Honda Civic maintenance schedule hub.
| Interval | Service |
|---|---|
| Maintenance Minder Code A (typically every 7,500-10,000 mi) | Engine oil change (0W-20), Reset oil life |
| Maintenance Minder Code B (typically every 15,000-20,000 mi) | Oil change + filter, Inspect brakes, suspension, fluids, Inspect drive shaft boots, tie rods, exhaust |
| Sub-code 1 | Rotate tires |
| Sub-code 2 (Maintenance Minder - no fixed mileage published) | Replace engine air filter, Replace dust and pollen (cabin) filter, Inspect drive belt |
| Sub-code 2, severe duty (dusty conditions for the air filter; high-soot urban conditions for the cabin filter) | Replace engine air filter or cabin filter every 15,000 mi - Honda's own severe-duty override |
| Sub-code 3 (Maintenance Minder - no fixed mileage under normal driving) | Replace transmission fluid (CVT HCF-2, or Honda MTF on the 6-speed manual) |
| Sub-code 3, severe duty (mountainous or low-speed driving) | Replace transmission fluid every 25,000 mi (CVT) - Honda's own severe-duty override (10th-gen manuals checked print no separate manual-transmission severe-duty figure) |
| Sub-code 4 (Maintenance Minder - no fixed mileage published) | Replace spark plugs, Inspect valve clearance, Inspect water pump (Civic engines are chain-driven, so there is no timing belt to replace) |
| Sub-code 5 | Replace engine coolant (Honda Long Life Type 2, blue) |
| Sub-code 6 | Replace rear differential fluid - all-wheel-drive Hondas only, so this code does not appear on a Civic |
| Sub-code 7 | Replace brake fluid |
The table above is indexed by service interval. This is the same schedule indexed by odometer reading, for when you know your mileage and want the list. If your odometer sits between these figures, work back to the last one you passed and catch up anything skipped.
| Odometer | Service due |
|---|---|
| 30,000 mi (48,000 km) | Engine oil change (0W-20), Reset oil life, Oil change + filter, Inspect brakes, suspension, fluids, Inspect drive shaft boots, tie rods, exhaust. |
| 60,000 mi (97,000 km) | Same as the 30,000 mi service. |
| 90,000 mi (145,000 km) | Same as the 30,000 mi service. |
| 120,000 mi (193,000 km) | Same as the 30,000 mi service. |
| 150,000 mi (241,000 km) | Same as the 30,000 mi service. |
Honda schedules this vehicle by Maintenance Minder code rather than by odometer, so the mileages above are the typical points those codes appear - the car itself decides, based on how it has been driven.
| Part | Fitment note | Buy |
|---|---|---|
| Mobil 1 0W-20 Full Synthetic (5 qt) | OEM-spec oil for 2.0L NA and 1.5T | Check price on Amazon |
| Honda Genuine Oil Filter | OEM filter for 2.0L NA and 1.5T - search link on purpose: the part number is not published in the owner's manual, so match your engine at checkout rather than trust a stamped number here | Check price on Amazon |
| Honda CVT Fluid HCF-2 (1 qt) | Required for Civic CVT - do not substitute | Check price on Amazon |
| Honda Long Life Antifreeze Type 2 (gallon) | Honda blue coolant - do not mix with green | Check price on Amazon |
| NGK Iridium Spark Plugs for Civic (set of 4) | Honda publishes no fixed replacement mileage (Maintenance Minder sub-item 4) for NA/1.5T; commonly changed around 100k mi in practice | Check price on Amazon |
| Honda Genuine MTF 08798-9031 (1 qt) | For Si and Type R 6-speed manual | Check price on Amazon |
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| Fastener | Torque | Size |
|---|---|---|
| Lug nut | 80 ft-lbs (108 Nm) | 19mm |
| Oil drain plug | 30 ft-lbs (41 Nm) | M14 |
| Spark plug | 13 ft-lbs (18 Nm) | 16mm |
The 2021 Honda Civic has 4 safety recalls on record with NHTSA, affecting the service brakes, air bags, fuel system (as of 2026-07-09). Recall repairs are free at any dealer. Run the live check on this page. Get reminded before recalls and services.
Maintenance keeps these away, but when the dash does light up these are the codes this vehicle throws most often - each with what it means and what the repair actually costs.