Air leak from the right hand camshaft cover assembly due to a split diaphragm within the pressure control valve. Any of the following DTCs (indicating an air intake system leak) could be stored in the Powertrain Control Module (PCM) ? P2187, P2189, P0505, P0507.
full bulletin at NHTSA ↗2012 Jaguar XF engine problems
severe 11 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
11
Recalls
0
Avg fix
$3,100
1fire
When does it fail?
Of the 11 engine complaints filed for the 2012 Jaguar XF, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 5 model years of Jaguar XF we track for engine problems, this one carries the most owner complaints on file — 11.
No new NHTSA engine complaint has been filed on this vehicle in over 6 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Issue: The customer reports a coolant leak from the engine compartment which is found to originate from the thermostat housing seam.
full bulletin at NHTSA ↗An 'engine overheat' message may be displayed on the Instrument Cluster and that coolant may be leaking from engine compartment area.
full bulletin at NHTSA ↗Customers report the ECO Stop/Start is not working. Retailers are testing the primary battery using the Midtronics EXP-1080 tester which is reporting the battery is serviceable. The vehicle then returns with the same Customer concern of ECO Stop/Start inoperative. If a Midtronics GRX-3080 is used, the primary battery fails the test. Replacement of the primary battery resolves the concern.
full bulletin at NHTSA ↗A clatter/knock/rattle noise may be heard from the engine.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2012 XF has a persistent problem with plastic coolant components that fail repeatedly. The crossover pipe and water pump leak; owners report needing multiple replacements (some three or more times) at costs ranging from $500 to $3,700. One owner spent over $5,600 total on coolant system repairs. The plastic pieces crack at the seams and burst under pressure. Jaguar updated the bleeder hose design from one part to two, but failures continue. Owners say the failures pose a safety hazard—coolant loss can cause overheating, smoking, and potential fire risk while driving.
Separate engine issues include loud timing chain noise with wear in the guides, all-cylinder misfiring that causes severe shaking and loss of power, fuel injector failures, catalytic converter problems, and fuel leaks. One owner's vehicle would not accelerate and repeatedly entered "restricted performance" mode. Another reported thick smoke and abnormal fuel odor at 66,000 miles. A dealer supposedly fixed a recall but the problem recurred immediately.
These are unverified owner allegations, but the consistency of coolant system complaints suggests a systemic design problem that Jaguar acknowledges through part updates.
Same Jaguar XF engine reports on nearby years: 2010
Failure modes owners describe
Plastic coolant crossover pipe cracking and leaking
The plastic crossover pipe that routes coolant bursts, cracks, and leaks repeatedly. Owners report this is a known design flaw affecting multiple 2012 XF vehicles. The pipe fails under pressure and has been subject to multiple replacement attempts with updated parts.
When: Typically 66,000+ miles; failures occur within days to months after replacement
Symptoms owners cite: Coolant leaking from overflow hose and around seams; Low coolant warnings; Smell of antifreeze; Visible coolant drips; Large coolant loss requiring frequent top-offs; Engine overheating
Repairs/costs cited: Water pump replacement: $734; crossover pipe and plastic part replacement: $502–$3,700 depending on labor; updated bleeder hose (now 2-part assembly): $419. Multiple owners report repeated failures despite replacement. One owner spent over $5,699 on three crossover pipe replacements.
Recalls/TSBs owners mention: Jaguar has issued updated parts and engineering changes in response to complaints. Some owners mention recalls exist for other vehicles with different VINs.
Water pump failure and leaking bleeder hose
The water pump fails prematurely, often within days of replacement. A related bleeder hose also leaks; Jaguar updated this part from a single assembly to two separate pieces.
When: Appears to fail repeatedly at various mileages; can recur shortly after initial replacement
Symptoms owners cite: Coolant leaking from water pump; Need for repeated replacements; Coolant odor after repair
Repairs/costs cited: Water pump replacement: $734. Bleeder hose replacement (updated 2-part design): $419. Pressure testing was performed but failures resumed within days.
Recalls/TSBs owners mention: Pressure testing and updated parts offered, but failures persist.
All-cylinder misfire with restricted performance
Engine diagnostics show all eight cylinders misfiring simultaneously, which owners and technicians report is extremely unusual. The vehicle enters a restricted performance mode, loses power, and shakes severely. One owner reports their VIN falls within an emission recall range but no recall is showing in the system.
When: Mileage and timing not specified in complaints
Symptoms owners cite: Check engine light illumination; 'Restricted performance' message on instrument panel; All 8 cylinders misfiring (diagnostic finding); Engine knocking and rocking; Whole car shaking and rocking; Loss of power; Random stalling; Failure to accelerate; Vehicle instability
Codes mentioned: All 8 cylinders misfiring
Repairs/costs cited: Repairs not completed in reported cases.
Recalls/TSBs owners mention: One owner reports an emission recall may apply to their VIN range, but the system shows only an airbag recall.
Fuel injector failure and catalytic converter degradation
Vehicle produces thick smoke, abnormal fuel odor, and loses fuel. Diagnosis indicates four fuel injectors are faulty and a catalytic converter must be replaced.
When: At 66,000 miles
Symptoms owners cite: Thick smoke production; Fuel odor (abnormal); Fuel loss; Failure to accelerate occasionally; Check engine light illumination; 'Restricted performance' message on instrument panel
Repairs/costs cited: Four fuel injectors and catalytic converter replacement were recommended but not completed by owner.
Timing chain noise and wear
Loud timing chain noise develops, indicating wear and potential timing chain failure. Owners report timing chain guides are made of weak or poor quality metal.
When: Timing not specified; occurs during vehicle operation
Symptoms owners cite: Loud timing chain noise from engine; Engine shaking badly while driving; Potential for timing chain failure
Repairs/costs cited: Repairs not detailed in complaints.
Fuel leak from fuel tank area
Fuel drips beneath the vehicle in the fuel tank area. Owner also reports strong gasoline smell in the garage.
When: Observed April 15, 2021
Symptoms owners cite: Gasoline smell (vehicle and garage); Fuel dripping under fuel tank area
Repairs/costs cited: Not specified in complaint.
Synthesized from 11 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
Coolant leak caused by bad plastic parts, especially the crossover pipe which was made as a welded together piece. Luckily, I had a warning that my coolant was low and continued to fill the coolant up till I could bring the car in for service and replacement of the water pump and plastic parts as recommended by other owners.
It started off as a small coolant leak but after spotting coolant on the overflow hose, I noticed a crack in the plastic hose. Replacing that hose didn't stop the problem; coolant kept leaking and I had to buy another bottle. I then brought my car to a mechanic who pressure tested it and said the water pump needs to be replaced. He replaces it for $734, we pressure test it, all seems good. A…
The dealer said that they fixed the recall, which is not true, because it came back so fast, it just unreal, the manufacture is one who should care about that, i was driving my kid to school wen the car started to shake badly, so i thought its kunda danger to my family !
Timing chain guides wear very easily make of weak or poor quality metal.
I took my car in for an alignment. After checking under the car, the mechanics realized that the coolant tubing was made of plastic and broke. They stated that if I drove the car, I would be in danger of the car smoking and maybe catching fire. I had to replace the coolant. I was informed the Jaguar has changed their engineering of this risk due to the number of complaints and repairs. I…
Had engine trouble with your 2012 Jaguar XF?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2012 Jaguar XF?
It's a meaningful issue. 11 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Based on the 11 complaints filed, engine issues most often appear around 79,333 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2012/Jaguar/XF.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.