2018 Honda Clarity coolant capacity
The 2018 Honda Clarity holds about 3.2 to 5.2 quarts of coolant, depending on the engine - the full cooling-system capacity when cold. The factory coolant is Honda Long Life Antifreeze/Coolant Type 2 (blue).
Key takeaways
- The 2018 Honda Clarity holds about 3.2 to 5.2 quarts of coolant total, depending on engine.
- This is the full cooling-system fill with the engine cold.
- Coolant: Honda Long Life Antifreeze/Coolant Type 2 (blue). Refill to the marked level and don't mix coolant types.
| Engine | Capacity | Liters |
|---|---|---|
| 0 | 3.2 qt | 3 L |
| 1.5L 4-cyl (LEB3) | 5.2 qt | 4.9 L |
Which coolant the 2018 Honda Clarity takes
The factory coolant is Honda Long Life Antifreeze/Coolant Type 2 (blue). Mixing coolant types can cause sludge and corrosion, so top up with the same product, or drain and refill completely when you switch.
Source: 2006 Civic Sedan Owner's Manual (ACV0606OM), 2006 Accord Coupe Owner's Manual (AAD0606OM). Confirm against your owner's manual or the label on the coolant reservoir.
What a coolant change costs
At roughly 0.8 to 1.3 gallons of capacity, the coolant itself is about $12 to $39. A shop charges $70 to $120 for a drain and fill, or $100 to $250 for a full flush. Use the specification the manufacturer lists - mixing coolant chemistries is what turns a cheap service into a water-pump job.
Ranges aggregated from published 2026 US repair-cost and parts price guides, including RepairPal and Car Talk. Prices vary by region, brand, and vehicle - treat these as a sanity check on a quote, not a fixed price. Drain and fill vs flush →
Coolant for your 2018 Honda Clarity
Buy Honda Long Life Antifreeze/Coolant Type 2 (blue), or a coolant that says on the jug it meets the same spec. Check whether it is premixed 50/50 or concentrate before you pour. To compare prices and reviews:
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