Auto Express's reliability ratings are based on our Driver Power survey of over 30,000 car owners. Ratings are the average for all owners of this car who responded. Individual owners’ ratings and comments appear below.
03-reg Petrol, Owner for 3 to 5 years

I have lost confidence in this car due to the frequent electrical faults and failures due to the overcomplicated electronics and high battery consumption. Also the lack of room below the front seats of this mode rendered this car despite its's 5meter length very uncomfortable for our rear seat passengers on our long journey to Europe and elsewhere! I understand after my complaints the mnufacturer has modified the rear foot space in their latest XJ models!

Reliability: 2/5 Build Quality: 3/5
Other-reg Petrol, Owner for Less than a year

Astonishing value : £500 for a very tidy Jaguar XJ40 3.2S with 100,000 miles,a year of MOT and 4 months of road tax.The only problems have been minor electrical ones - 2 blown fuses and 3 bulbs.Shame about the fuel consumption,compared to modern Jaguars - 20-25mpg,but that's been the only cost in a year of trouble-free luxury motoring.

Reliability: 5/5 Build Quality: 5/5
02-reg Petrol, Owner for 3 to 5 years

I have to admit that buying a Jaguar Sovereign was a bit of a daunting concept, but turned out to be the best idea I could have come up with.
Excellent reliability, surprisingly low maintenance costs and acceptable fuel economy together with the expected sense of occasion have maade for a superb ownership experience.

Reliability: 5/5 Build Quality: 5/5
2004-reg Petrol, Owner for 1 to 3 years

Not only the most reliable jaguar ive ever own its the most reliable car, well on par with our mx5. I use a specialist avoid main dealers as they are useless and expensive with it.

Reliability: 5/5 Build Quality: 5/5
2008-reg Diesel, Owner for 3 to 5 years

Perfect excellent and totally reliable. Dealer servicing is a mikey take regardless of brand! but this is cheaper than german brands charge and far better customer service too.

Reliability: 5/5 Build Quality: 5/5
06-reg Diesel, Owner for 1 to 3 years

It is the best car I have every had and I have had BMW 7 and Audi A8. A couple of anyoing problems but the way the car drives makes you forget these things.

Reliability: 4/5 Build Quality: 4/5
2005-reg, Owner for 1 to 3 years

Gearbox broke & returned car to uk from france and jag refused warrante! as I am french resident! 1 tank fuel every two/three weeks approx 100€.

Reliability: 1/5 Build Quality: 4/5
2010-reg Diesel, Owner for 1 to 3 years

Never had a problem , it is the best jaguar model that I have ever driven. Only new tyres after 28,000 miles.

Reliability: 5/5 Build Quality: 5/5
R-reg Petrol, Owner for 3 to 5 years

The car for its year is emaculate and drives like a new car with no body or mechanical problems.

Reliability: 5/5 Build Quality: 5/5
2003-reg Petrol, Owner for 1 to 3 years

First class always fully reliable. You cannot have a luxury vehicle without high running costs.

Reliability: 5/5 Build Quality: 5/5
57-reg Petrol, Owner for Less than a year

Excellent - a much better choice than German brands which have proved to be very unreliable

Reliability: 5/5 Build Quality: 4/5
2010-reg Diesel, Owner for less than a year

Faulty tyre pressure monitoring system and door seals being noisy, all sorted under waranty

Reliability: 3/5 Build Quality: 4/5
03-reg Petrol, Owner for 1 to 3 years

A quality car with average build quality support by a very poor franchised dealer!

Reliability: 1/5 Build Quality: 2/5
2012-reg Diesel, Owner for less than a year

Problems with flat battery. Very impressive for such a large car.

Reliability: 4/5 Build Quality: 5/5
03-reg Petrol, Owner for 3 to 5 years

A good sporty saloon that has lived up to my expectations

Reliability: 4/5 Build Quality: 4/5
04-reg Petrol, Owner for 1 to 3 years

Superb reliable quality car but a little thirsty

Reliability: 5/5 Build Quality: 5/5
2010-reg Diesel, Owner for less than a year

No problems at all. What I expect for the car.

Reliability: 5/5 Build Quality: 5/5
1996-reg Petrol, Owner for 3 to 5 years

It just is. To much tax to much insurerance.

Reliability: 5/5 Build Quality: 5/5
1985-reg Petrol, Owner for more than 5 years

No major problems. It is a v12 ??.

Reliability: 4/5 Build Quality: 4/5
2008-reg Petrol, Owner for less than a year

No problems. It's a jaguar !!

Reliability: 5/5 Build Quality: 5/5
04-reg Petrol, Owner for 1 to 3 years

Good car but a few niggles

Reliability: 3/5 Build Quality: 3/5
2010-reg Diesel, Owner for 1 to 3 years

Never had a problem

Reliability: 5/5 Build Quality: 5/5