Should I check the MOT history before buying a 2018 Jaguar Xj?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2018 Jaguar Xj?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2018 Jaguar Xj?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

Is the 2018 Jaguar Xj reliable?

Based on MOT data from 666 vehicles, the 2018 Jaguar Xj has a first-time MOT pass rate of 92.3%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2018 Jaguar Xj?

The most frequently recorded MOT issues on the 2018 Jaguar Xj are: Offside Front Tyre worn close to legal limit/worn on edge (33.5% of vehicles), Nearside Rear Tyre worn close to legal limit/worn on edge (33% of vehicles), Offside Rear Tyre worn close to legal limit/worn on edge (32.6% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2018 Jaguar Xj?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Jaguar Xj (2018)

666 real MOT outcomes analysed • 92.3% first-time pass rate

2018 Jaguar Xj

CarHunch analysed 666 real MOT records for the 2018 Jaguar Xj. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

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AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2018 Jaguar XJ is a solidly reliable proposition, with a 90.6% first-time pass rate that comfortably beats the UK average of 80%—and the diesel variant performs even better at 90.9%. However, 17.6% of these cars have suffered dangerous defects at some point, which is notably higher than typical and warrants a full pre-purchase inspection by a Jaguar specialist.

These XJs show moderate mileage for their age (median 33,181 miles), suggesting many have been well-maintained and not thrashed around town. The average of 0.51 failures per test is reassuring, but the high advisory count of 4.6 items per car indicates that while major problems are rare, routine wear items and minor niggles are common—budget for regular servicing and have any advisory items checked by a technician before committing to a purchase.

The 2018 Jaguar Xj passes its MOT first time at roughly the UK average rate (92.3%) — solid but worth checking this vehicle's history carefully.

⚠️ Around 1 in 8 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

92.3%

UK average ~80%

Better than average

Dangerous (ever)

17.6%

At least once in MOT history

Check this vehicle

Avg failures / car

0.51

Over 5.6 tests on record

Moderate

Typical mileage

33k

Middle half: 24k–46k

For context

✅ Good baseline reliability. A 92.3% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔧 Expect consumable spend. An average of 4.6 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 666 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Average reliability — agree?

What tends to go wrong

Across 666 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 33.5%

Offside Front Tyre worn close to legal limit/worn on edge · Nearside Rear Tyre worn close to legal limit/worn on edge · Offside Rear Tyre worn close to legal limit/worn on edge · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Brake wear 26.3%

Rear Brake pad(s) wearing thin · Front Brake disc worn, pitted or scored, but not seriously weakened · Front Brake pad(s) wearing thin · …

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Other issues 7.4%

COVID-19 6 MONTH EXTENSION · Windscreen damaged but not adversely affecting driver's view

Data covers a 3-year window centred on 2018.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 666 Jaguar Xj cars.

Before you buy a 2018 Jaguar Xj

Based on MOT data from 666 vehicles — here's what to check.

📋 Check the full MOT history. 17.6% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection →
📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Diesel (94%)	628	92.4%	0.5

Colour Breakdown

Based on 79,443 Jaguar Xj vehicles registered in the UK — across all years. From DVLA registration records.

Blue 29.4%

23,344

Red 17.2%

13,699

Green 14.1%

11,218

Silver 11.7%

9,256

Black 11.4%

9,064

Grey 9.2%

7,286

White 2.2%

1,781

Beige 2%

1,625

Gold 1.2%

984

Turquoise 0.6%

447

Brown 0.5%

419

Purple 0.4%

320

Mileage Distribution

Most 2018 Jaguar Xj vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

33,181

typical

24,204

low mileage

46,489

high mileage

Half of all 2018 Jaguar Xj vehicles fall between 24,204 and 46,489 miles.

Is the mileage you're seeing normal?

✓ Under 24,204 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 24,204–46,489 miles — normal for age. This is where most 2018 Jaguar Xjs sit.

⚠ Over 62,760 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 Jaguar Xj — Still on the Road

Almost all 2018 Jaguar Xjs are still on the road.

Strong survival — 613 vehicles still getting MOTs in 2025, 96% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2020–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

5.6

Avg MOT tests per vehicle

0.51

Avg failures per vehicle

4.6

Avg advisories per vehicle

Other model years — Jaguar Xj: All Xj years → Which year to buy? →

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Average reliability — agree?