Subaru Crosstrek GP

World's first boxer diesel — technically fascinating, acoustically disappointing. No boxer rumble like the petrol: sounds like a regular diesel with shifting ECU injection noises that vary day to day. Crankshaft failure on 2008-2010 from stress risers in the aluminum block next to steel inserts — Subaru revised the crankshaft three times (12200AA380→AA381→AA480) without ever issuing a recall. DPF clogs on short trips, oil dilution from post-injection during active regen — ECU only estimates dilution, doesn't measure it. 2012+ (XV/Forester SJ) largely free of crank issues. 2015+ (Euro 6) almost trouble-free. Liqui Moly diesel additive lowers regen temperature per community. Timing belt every 100k km mandatory.

• !! Crankshaft Failure on Early Models (2008-2011) from 100,000 km

  Cracks at the rear main bearing journal from insufficient material strength and incorrect factory torque specs. Failure typically between 50-80k miles, often without warning. Subaru corrected both causes (sealant + torque) after 2011.

  Symptoms: Sudden knocking from engine, oil pressure loss, engine seizure
  4,000–10,000 $
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• !! DPF Clogs on Short Trips from 80,000 km

  Diesel particulate filter clogs with predominantly short-trip driving — regeneration doesn't initiate. Check engine light, power loss, forced dealer regeneration.

  Symptoms: Check engine light, power loss, increased consumption, DPF warning light
  800–2,500 $
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• !! Oil Dilution from DPF Regeneration from 60,000 km

  Frequent DPF regeneration injects diesel into the oil — oil level rises, viscosity drops. Accelerated wear if not changed in time.

  Symptoms: Oil level above max, diesel smell on dipstick, thin oil
  200–1,000 $
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+ 2 more engine weaknesses + vehicle weaknesses

Naturally aspirated boxer with 2.0L — the Impreza/Crosstrek engine. Watch for valve spring recall on 2012-2014 models. Oil consumption on early examples (class action settlement). Significantly improved from 2015. Reliable everyday engine with no ambitions — does its job and stays quiet.

• !! Recall: Valve Spring Fracture

  Recall WTY-84: 2012-2014 Impreza, 2013 BRZ, 2013 Crosstrek — 140,249 US vehicles. Valve springs fracture, engine stalls. Repair time 7-12 hours.

  0–0 $
• !! Oil Consumption Early Models (2012-2014) from 50,000 km

  Class action: 2012-2013 Impreza, 2013 Crosstrek. Settlement with 8 year/100k mile warranty extension. Significantly improved after 2014.

  Symptoms: Oil level warnings, elevated oil consumption between changes
  4,000–5,000 $
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• ! Timing Chain Tensioner Cold-Start Rattle from 60,000 km

  Hydraulic timing chain tensioner bleeds down when parked. Cold start produces 3-5 seconds of metallic rattling until oil pressure is restored. TSB exists: replace left tensioner with modified part.

  Symptoms: Metallic rattling on cold start for 3-5 seconds, sounds like chain noise, disappears at operating temperature
  300–800 $
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+ 1 more engine weaknesses + vehicle weaknesses