Is the 2018 JAGUAR XJR reliable?

Excellent reliability. Very few MOT failures. 93% of JAGUAR XJRs from 2018 passed their MOT first time in 2026, based on 191 tests. That's 11 points above the national average of 82%.

How much does a 2018 JAGUAR XJR cost to run?

Estimated annual running cost is £2,042 (£170/month), including £1592 fuel, £195 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2018 JAGUAR XJR?

The 2018 JAGUAR XJR has a 93% MOT pass rate based on 191 tests in 2026. This ranks 195 out of 649 cars from 2018.

Which year JAGUAR XJR is most reliable?

The 1991 JAGUAR XJR has the highest MOT pass rate at 100%. The least reliable year is 1995 at 74%.

JAGUAR XJR (2018)

Q: What is the average mileage for a 2018 JAGUAR XJR?

The average mileage for a 2018 JAGUAR XJR is 47,058 miles, which is below the expected 59,200 miles for a 8-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 191 real MOT tests.

Annual Cost

£2,042

£170/month

MOT Pass Rate

93%

Excellent

Road Tax

£195

Flat rate/year

Insurance

Grp 35-50

5000cc Petrol

Great Choice

93% pass rate, £2042/year to run. 11 points above average.

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Petrol5000cc8 years old191 tests47k miles avg

Annual Running Costs

Fuel (Petrol, 5000cc)

~30 mpg

£1,592

Road Tax

Flat rate (post-2017)

£195

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,042

Per month£170/mo

Per week£39/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

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Reliability Verdict

93% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the JAGUAR brand average of 88%.

At 8 years old, 93% of JAGUAR XJRs from 2018 passed their MOT first time in 2026. That's based on 191 tests across the UK. The average mileage at this age is 47,058 miles.

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How Does It Compare?

Rank among 2018 cars195th of 649(top 30%)

Rank among JAGUAR models94th of 299(top 31%)

vs national average+11%(82% avg)

vs 2018 cars average+4%(89% avg)

vs JAGUAR average+5%(88% avg)

Mileage Analysis

47,058

Average miles

59,200

Expected for age

The average 2018 JAGUAR XJR has 47,058 miles on the clock, which is below the expected 59,200 miles for a 8-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

The most reliable year is the 1991 model with a 100% MOT pass rate, while the 1995 model has the lowest at 74%. The 2018 sits between the two at 93%.

JAGUAR XJR by Year

Year	Pass Rate	Tests	Avg Mileage
2018	93%	191	47,058 mi
2017	95%	133	58,591 mi
2016	92%	165	49,299 mi
2015	83%	75	53,356 mi
2014	91%	183	62,913 mi
2013	93%	30	74,665 mi
2008	89%	157	87,799 mi
2007	84%	348	94,403 mi
2006	77%	294	99,136 mi
2005	82%	167	101,910 mi
2004	77%	370	108,410 mi
2003	84%	541	112,539 mi
2002	79%	99	108,492 mi
2001	82%	328	113,959 mi
2000	81%	172	100,269 mi
1999	80%	298	106,393 mi
1998	79%	790	107,156 mi
1997	87%	189	106,536 mi
1996	84%	187	112,362 mi
1995	74%	325	107,723 mi
1994	85%	80	121,359 mi
1993	76%	33	83,103 mi
1992	83%	47	96,642 mi
1991	100%	64	20,438 mi
1990	89%	106	132,962 mi

Similar Cars to Consider

LAND ROVER RANGE ROVER

2017 · 4999cc Petrol

£2,037/year

91%

-2%

MERCEDES S-CLASS

2017 · 5461cc Petrol

£2,037/year

93%

same

JAGUAR F-TYPE

2017 · 5000cc Petrol

£2,037/year

94%

+1%

MERCEDES SLK

2016 · 5461cc Petrol

£2,247/year

89%

-4%

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About the 2018 JAGUAR XJR

The 2018 JAGUAR XJR is a premium performance with a 5000cc petrol engine. 191 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model beats that benchmark.

With an average of 47,058 miles at 8 years old, JAGUAR XJR owners tend to use this car less than the typical driver.

2018 JAGUAR XJR Fuel Costs

The 5000cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 2018 JAGUAR XJR?

Total estimated annual running cost is £2,042 (£170/month), broken down as £1592 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

JAGUAR XJR Reliability Trend

The JAGUAR XJR has maintained consistent MOT pass rates across model years, varying by only 2 percentage points.

Buying a Used 2018 JAGUAR XJR

At 8 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 1991 model has the highest pass rate at 100%.

Common Issues to Watch For

Based on the 2018 JAGUAR XJR's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 8 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

Suspension Wear

Medium risk

Shock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2018 JAGUAR XJR stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
JAGUAR XJR(2018)	93%	£1592	£195	Grp 35-50	£2042
LAND ROVER RANGE ROVER(2017)	91%	£1592	£190	Grp 35-50	£2037-£5
MERCEDES S-CLASS(2017)	93%	£1592	£190	Grp 35-50	£2037-£5
JAGUAR F-TYPE(2017)	94%	£1592	£190	Grp 35-50	£2037-£5
MERCEDES SLK(2016)	89%	£1592	£250	Grp 35-50	£2247+£205

Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.