[ive gone through two 3.0 engines…(same block as the 5.0) I personally feel they are faulty and seriously flawed due to the crank missing two rod journals and high stress loads on the leading 2 (missing) cylinders . The 5.0 is much better balanced and stronger That said the biggest problem with all direct injection engines is very clean oil .. Clean oil and oil level is king…I always check the level every time I drive… oil changes must be done within 5-7k km. Not 15k or so as stated by the manufacturer. I've put over 160,000 km on the 5.0 pushing over 550HP. I love the 5.0 yet hate the 3.0 even though they share the same block. Oil management has been my saving grace. Luckily I have not encountered the cooling pipe issues as I change out all the crappy plastic pipes every 5 years ….I don't think they last much longer than that and Im not about to test that theory. The 5.0 is an incredible engine however it needs attention and precise maintenance- like any high horsepower engine.

fyi) you can rebuild the 5.0 much less expensive than purchasing a used one while at the same time adding in better internals. Far too many guys are lazy on the oil change milage no matter what the brand and inevitability pay the price oil is very cheap insurance and it works for me
just be glad you don't have a 3.0 .. theres no hope for them…My engine warranty on the 3.0 only covered a maximum of 5k per repair. Hopefully you have better coverage.
my2c

 

i love the 4.2sc its not direct injection so it has a less finicky maintenance regimen. Solid and well developed over the years. Unfortunately it doesn’t have the monster power of the 5.0

 

With some tweaks, the 4.2 SC certainly can be a contender. I've had a couple of the 5.0 litres and only issues were related to the cooling circuit. I've a Disco fitted with the 3.0 litre SC and it too has had every piece of the cooling system replaced, along with a few other issue, but with over 100K miles, the engine itself is fine. I rotate between Castrol Edge Professional and Penzoil Ultra Platinum and change the oil every 5-7K miles and the oil always looks good. I tried going the 15K interval JLR recommends and the oil was black as pitch so I agree, fresh oil helps keep it clean.

 

You change ALL cooling pipes and thermostat and thermostat housing and cool expansion tank EVERY FIVE YEARS??

Hermann

( 4.2 ltr NA engine, 2007 Convertible )

 

Ok, so it's been forever and a day since I posted. The wrist pin broke and destroyed the engine. Car is a 2010 XKR with 28,000 miles at incident. Warranty company coughed up and a genuine replacement engine was ordered from England and installed at dealership in Marin, CA. Co-pays weren't cheap as Bill was over 25k. Once installed, she runs like new. Weve put on a couple thousand miles and all good. After all of that, I am considering selling her. I am seeing prices increase for XKR's since I bought mine. A 2010 with low miles going for about 35k. My big question, with a new engine installed by dealer, what would you value the car? Dash has been removed and duckbill problem fixed. Headliner replaced with new and zero issues with dash leather. I hate to entertain selling, but information can't hurt. These low mileage cars don't get driven much and similar problems when flying small planes. They need to be used to get that oil in all the right places! Thanks all. Airbornecat

 

I was recently in the market and looked at two X150 "R" cars, one a coupe and one a cab. About the same miles, 4.2L cars, and one was $28K the other $24K (coupe and cab, respectively). I had PPIs done on both. The $28K car needed $4K of suspension work along with a dash repair, and the $24K car had electrical gremlins yet to be resolved. I passed on both as neither seller was willing to make allowances.

Natch California is a different market, but $35K would be top retail dollar that some unsuspecting fool might pay at a dealer, but I think you'd be hard pressed to get that. A new engine is a positive, and if your car is the right color and cosmetically perfect and has no other mechanical issues, then no one would fault you for trying for low thirties.

 

Whilst the market for any car is high at the moment what's likely not changed for the X150 is demand. It's always been to the seller's advantage for a good clean example yet there's little demand nor is it likely increasing in value and the older they get, the less desirable they get. A new engine may be attractive to one buyer but not likely to increase value much, if at all.

 

if your odometer got set back,what does it say?Whatever the new mileage says for the engine,look up the kbb.com value and sell it for that😈😏

 

As the new owner of an XK, I did look at XKR's while searching. I would start at $40k and see if you get bites.

 

The ODO would not be rolled back even with a new engine, completely illegal for any reason, plus the rest of the vehicle still has mileage on it.

 

ok i thought it did cause i seen it happen for 1 of my Army friends when his engine blew from a poor maintenance oil change on his hyundai.For some reason,they rolled his odometer back or maybe that new engine they installed had rolled it back or something.I was a witness after he showed me that,cause he had over 80k miles on it at 1st and the new engine put him back at 13k miles

 

40k is steep for a 2010.

Check CarGurus and Autotrader nationally to et an idea of what these cars are going for. Like you said, you won't find many 2010s with low miles....

 

well damn, I just looked on CarGurus. 40k isn't as far off s I thought for under 50k miles for 2010 to 2011 XKR. Apologies @llear60man

 

Haha no worries man. I kill a lot of time in hotel rooms looking at cars so kind of had the inside track. I know of one 2011 XKR with 50k miles for $27K in white/black but its a little rough and the seller in BFE. I almost bought it to flip, but i dont have time for that right now with the holidays approaching.

Im assuming Jaguar will warranty the new engine for 3/36k miles? If so thats a big plus.

 

Counter point to doom and gloom on the 5.0
ive had 2 XKR the first one had 164,000 miles with zero issues other than maintenance. Yes timing chains and tensioners fail like on all other car manufacturers however you can hear it long before it causes any damage to the engine. At least you don’t have to remove the engine to change them or they are located on the back of the engine….
yes i changed cooling pipes, water pump and SC coupler but thats it. Oil change ever 6k miles is critical on any high HP engine. These engines are not fragile as some here have stated. like any make of high HP engines you need to pay close attention to its operation and diligent maintenance far more often than the dealer recommended intervals.Its like dating a high maintenance super model…
i still believe that many of the issues reported are from people that only drive these cars and thats about it…. Yes as in all makes there can and will be issues however as I said high HP engines needs attention and preventative maintenance.
what else can you buy that looks as good, is exclusive and affordable as an XKR.?
i love the 5.0 always will…PS) I run a highly modified 5.0’s that give me the performance I want every day….m2c

 

I've had my 2010 XKR Convertible for over 10 years now. About 42k on it so far. I'm just fastidious about annual maintenance - but I've had zero issues so far. I also picked up a 65k mile 2011 XJL SS last year that so far is treating me pretty well. It came out of FL and the bushings in the suspension are cracked and worn, but powertrain wise... doing very well.

 

Last week on Bring A Trailer, I was tracking a 2010 XKR with 30,000 miles on it. As my 2010 XKR is at nearly 200,000 miles, I expect things to start breaking down more often, and since I've enjoyed this car so much, I figured I'd look around. A year to two years ago, there were plenty of 2010 cars around in the low $20,000 range. The one on bring a trailer sold for $33,750. So prices on them (as well as most other used cars) have, indeed, risen. I'll give you $25K right now, if you don't want to go through the trouble.

 

Jahummer is correct - the issue here is demand. It's a niche car and supply is always adequate as relates to demand, even now, though this is a very good time to sell and you're fortunate in that regard.
Your problem is simply this: on all the major resale sites (autotrader, etc), the only way let people know about the new engine is in the Seller Comments section. And to get there, even someone who's looking for an XK has to be enticed by the "Big Three" (price, year, mileage) to click through and learn about the new engine. Only exception to this might be BAT.
(I was thinking of selling my car but I'm over the deadly 100,000 mile mark-- there's a 2010 XK 'vert (not an R) with 105K miles that's been sitting on autotrader at $13,900 forever. Ouch.)
It's all about how quickly you want the $$. If you want to move it, sad to say, I'd put it on at 29,900 and see if you get any action. You can always raise the price, which looks better than lowering it.
Have you taken it into Carmax, just to see?

 

A lot of folks are apprehensive about the costs of jag repair and maintenance, and frankly they should be. Really good car, but you don't often get out of the dealer for les than $1K. Jag dealers make BMW dealers look like bargains, and seriously, Jag dealer parts prices are absurd.

If you DIY though, there's some nice bargains out there. I don't mind considering between 70-110K, mileage way out of acceptable range for many buyers. And for me, a big part of ownership is learning a new car.

 

I respectfully disagree. IMHO raising the price on a car people are watching is a big turn off.