The 8th-generation European Accord with the N22B i-DTEC diesel was Honda's answer to the Passat, Mondeo, and Avensis in the mid-size segment. Standard tune makes 150 hp, the Type-S and post-2011 170/180 hp versions add more torque. The engine uses a timing chain and shares its block with the Civic and CR-V of the era. It is widely considered solid for a modern diesel, but carries the usual diesel complexity: DPF, EGR, high-pressure common-rail, and a dual-mass flywheel. Sold in Europe from 2008 to 2015, with a facelift in 2011 that improved the DPF strategy and tensioners.
Timing chain, no belt replacement
Strong torque, good motorway economy
EGR pipe cracks are widespread
DPF and DMF are costly weak points
Buy if: You drive mostly motorway or mixed routes, want a spacious diesel saloon or estate, and can find one with documented service history and correct low-SAPS oil used throughout.
Avoid if: You mainly do short urban trips (DPF will clog), cannot verify clutch/DMF condition, or are looking at a pre-facelift car without recent EGR and fuel pump history.
Expected Annual Maintenance Costs
Common Problems
The flexible EGR bypass pipe cracks from thermal fatigue, causing noise, smell and limp mode · more· less
This is the single most commonly reported fault on the N22B across Accord, Civic and CR-V. The flexible section of the EGR bypass pipe on the side of the engine block suffers thermal fatigue and cracks, which produces a distinctive hissing or ticking sound, a diesel smell in the engine bay, and eventually an EML and power loss. Honda has acknowledged the problem and sells a dedicated repair kit (part 06187-RL0-305) with the updated pipe plus all gaskets and bolts. Parts cost around €150-250, labour is 3-5 hours because the coolant system has to be partially drained. Most well-used examples have either had this done once already or are due. Confirm in the service history or be prepared for the bill.
Large DPF mounted close to the turbo clogs easily on short trips; forced regens often only delay replacement · more· less
The i-DTEC DPF sits immediately after the turbo and is known to clog on cars used mainly for short journeys. Forced regeneration at a Honda dealer or specialist costs €150-250 per session and is not guaranteed to restore normal operation. A replacement DPF from Honda costs over €1,000 in parts alone, total €1,500-2,500 fitted. An off-car clean at a specialist (around €300-500) is often a sensible middle step. Pre-facelift (2008-2011) cars are worse offenders because of oil dilution. Multiple reports link DPF and turbo damage to Honda dealers historically filling the engine with the wrong 5W-30 oil instead of the required 0W-30 low-SAPS spec.
DMF and clutch often need replacing between 120,000-180,000 km, especially on Type-S · more· less
The clutch on the 2.2 i-DTEC is on the weak side for the torque it handles, particularly on the 180 hp Type-S. Symptoms include judder from rest, a rattle at idle in neutral, and clutch slip under load. Replacing just the clutch kit is around €800-1,000 fitted at an independent; full clutch and LUK dual-mass flywheel kit runs €1,100-1,500 at a specialist and up to €1,800 at Honda dealers. Skimming the flywheel sometimes buys more life for about €150 but is not always viable if the DMF is worn. Plan for this job once in the car's life if buying above 120,000 km.
Bosch CP4 pump can disintegrate internally, sending metal swarf through the entire fuel system · more· less
The Bosch CP4 high-pressure pump fitted to the i-DTEC can fail internally and shed metal particles (swarf) through the fuel rail and into every injector. When this happens, a simple pump swap is not enough: the tank, lines, rail and all four injectors typically need replacement, which is where the cost blows up. Not every Accord suffers this and it is not a universal flaw, but when it does happen the bill routinely exceeds €3,000. Higher risk on cars run low on fuel frequently or fed poor-quality diesel. P0087 low rail pressure, hard starting and stalling are the classic warning signs.
Typical turbo life 160,000-200,000 km; oil quality and DPF regens shorten it · more· less
The VGT turbo is reasonably durable but, like most modern diesel turbos, is sensitive to oil quality and to the repeated heat cycles of DPF regeneration. Failures tend to appear between 160,000 and 200,000 km. Symptoms are whistling, excessive smoke, and loss of boost. A reconditioned turbo at a specialist is typically €450-700 for the unit plus €400-600 labour; a complete new Honda turbo is significantly more. Stuck vanes from carbon build-up are sometimes fixable with a clean rather than full replacement.
Early N22B engines had chain stretch issues; Honda revised tensioners later and covered many cases under goodwill · more· less
Early 2.2 i-DTEC engines (2008-2010) had a rate of timing chain stretch and tensioner problems, which Honda addressed with revised parts and covered many cases on goodwill up to around 125,000 miles. Later cars are much less affected. On a used Accord, listen for a rattle on start-up and light clatter at idle; if present, assume a full chain kit job at €1,200-2,000 including labour. On facelift cars (2011+) this is a relatively low-probability issue.
EGR valve and intake tract carbon up on short-trip use, causing rough running and EML · more· less
Separate from the cracked bypass pipe, the EGR valve itself and the intake manifold accumulate heavy soot deposits, particularly on cars used for short journeys. Symptoms include an EML, a P0401 or P0402 code, hesitation under load, and occasional stalling. A clean usually resolves it for €150-250 at an independent; replacement is €400-600 with parts. Mapping the EGR out is common in the UK but is not legal for road use in most EU countries and will fail MOT/technical inspection where applicable.
VSA/ABS module can fail, triggering persistent warning lights and disabling stability control · more· less
The VSA (Vehicle Stability Assist) modulator on CU-generation Accords is a known failure point, with multiple owner reports of permanent VSA and ABS warning lights. The car remains driveable but without ABS or stability assist. A replacement module is €400-700 plus labour; refurbished units are available from specialists for less. Not a safety-critical failure on a sound chassis but will fail a technical inspection.
Durable underneath, but diesel complexity adds up
The i-DTEC earns a reputation as one of Honda's better diesels and can easily exceed 300,000 km with the right care. The bulk of the cost risk comes from well-known diesel components: EGR pipe, DPF, dual-mass flywheel and, occasionally, the high-pressure fuel pump. A facelift car (2011+) with documented EGR pipe replacement, correct low-SAPS oil history and no DPF warnings is the sweet spot. Short-trip drivers should look at the 2.0 i-VTEC petrol instead.
Recalls and Technical Service Bulletins
Takata airbag inflator recall (affecting various 2008-2015 Accord models)
Verify completed
Fuel feed hose recall on early 2.2 i-DTEC (some 2008-2009 VIN ranges)
Verify completed
Contact a Honda dealer with the VIN to verify all recalls have been completed, including the Takata airbag work which is the most safety-critical item on this generation.
Warranty Status
Factory warranty (3 years / 100,000 km)
Expired on all CU Accords
Timing chain goodwill (early cars)
Expired - originally up to 125,000 miles
Rust perforation warranty (12 years)
Expired on most cars
Extended warranty availability
Third-party only - factory Honda extension not offered for this age
All 8th-generation Accords are now outside every Honda factory warranty. The historic timing chain goodwill programme for early 2.2 i-DTEC engines has long ended. Third-party used car warranties are available but often exclude DPF, EGR and DMF - the exact components most likely to fail on this engine.
This report is for informational purposes only and does not constitute professional advice. Estimates may be inaccurate. Always have a qualified specialist inspect the vehicle before purchase. We accept no liability for decisions made based on this information.