2.4 i-VTEC (K24)
2003–2015 · petrol · 2354cc · 190hp
Engine codes: K24
Reliability, common problems and owner reviews for the Honda Accord 2.4 i-VTEC (K24). Check this before you buy used.
The K24 — a well-proven, chain-driven Honda engine used across the range and a genuinely durable, low-maintenance workhorse. 'Reliable' is well earned, with the usual K-series caveats: the VTC actuator can grind/rattle for a second or two on a cold start as it wears (harmless per Honda, but worth fixing before it stresses the chain); the front crankshaft seal is the K24's known oil-leak spot; the screw-type valves need periodic clearance checks; and it can use some oil at high mileage. The 8th-gen's 5-speed auto blunts it, but the engine itself is bulletproof with oil care.
Known Issues
A worn VTC actuator locking-pin spring causes a brief grinding/rattle on cold start. Harmless per Honda, but if left for years it can stress and stretch the timing chain.
Fix / Workaround: Genuine oil on time delays it; if persistent, replace the VTC actuator with the chain tensioner/guides.
Repair cost: €250–€1200
Typically appears after: 120,000 km
The K24 has a propensity to weep oil from the front crankshaft seal with age.
Fix / Workaround: Replace the front crank seal if leaking.
Repair cost: €120–€400
Typically appears after: 150,000 km
Screw-adjustable valves need periodic clearance checks (neglect tightens them, risking burnt valves and a tappet tick); some oil use at high mileage.
Fix / Workaround: Adjust valve clearances per Honda's schedule; check oil regularly and top up.
Repair cost: €120–€350
Typically appears after: 120,000 km
Mileage Thresholds
After 120,000 km: VTC actuator rattle and valve-clearance attention become likely.
After 300,000 km: Durable with oil care and valve adjustment.
Pre-Purchase Checklist
- ☐Cold start: listen for a 1–2 second grinding rattle (VTC actuator)
- ☐Check for a front crank-seal oil weep
- ☐Ask for valve-clearance records; check oil consumption
- ☐The dependable petrol choice; auto blunts the 8th-gen
Frequently asked questions
Is the Honda Accord 2.4 i-VTEC (K24) reliable?
Reliable — The K24 — a well-proven, chain-driven Honda engine used across the range and a genuinely durable, low-maintenance workhorse. 'Reliable' is well earned, with the usual K-series caveats: the VTC actuator can grind/rattle for a second or two on a cold start as it wears (harmless per Honda, but worth fixing before it stresses the chain); the front crankshaft seal is the K24's known oil-leak spot; the screw-type valves need periodic clearance checks; and it can use some oil at high mileage. The 8th-gen's 5-speed auto blunts it, but the engine itself is bulletproof with oil care.
What are the common problems and reviews for the Honda Accord 2.4 i-VTEC (K24)?
The most commonly reported problems: VTC actuator cold-start rattle, Front crankshaft seal oil leak, Valve clearance / oil consumption.
Is a used Honda Accord 2.4 i-VTEC (K24) worth buying?
Minor issues only, easy to maintain, no design flaws. A safe used buy.