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Welcome to the forum and to the world of Jaguar GTs! The 2015 XKR is a fantastic machine — the last of its kind really — blending brutal supercharged V8 power with elegant long-nose, short-tail design. It’s not a tuner car in the traditional sense, so most of us focus on preserving performance, enhancing reliability, and making tasteful upgrades. Here’s a quick rundown:
Common Checks & First Fixes
Cooling system: The XKR runs hot. Check coolant hoses, water pump, and thermostat. If original, consider replacing.
Supercharger belt & tensioner: Prone to wear. A chirp or squeal is a giveaway.
Timing chain tensioners: Less problematic on 5.0 SC than earlier AJ engines, but worth inspecting if you’re above 60k miles.
Sticky buttons: You found the thread — usually interior plastics reacting to heat/humidity. Clean or reskin are both viable options.
Paint Protection
Ceramic coat is a great first step — easy maintenance and shine.
PPF (Paint Protection Film): Worth it only if you’re protecting a pristine finish or plan on long-term ownership. Start with bumper/hood if cost is a concern.
Mods (Keep It Classy)
This is a grand tourer, not a track car — most owners aim for refinement:
Powder coating the stock wheels: Totally fine, especially if you like black. Avoid cheap jobs — poor prep ruins balance and finish.
Intake/exhaust: K&N drop-in is easy, or VelocityAP makes a mild exhaust kit. Just don’t go straight pipe — kills the refinement.
Carbon fiber: Quality sources are limited. Look at Arden, Paramount Performance, or Maxton Designfor subtle pieces. Avoid eBay specials unless reviewed.
Tune: If you’re itching for more power, a conservative ECU remap from VelocityAP or others can wake it up without pushing stress too far.
Paddle Shifting “Bogging Down”
Yes — this can be normal. The ZF 6HP26 is adaptive and smooth, not lightning-fast.
If it bogs in 1st/2nd:
You may be shifting too early under partial throttle
The transmission may still be adapting to your style (give it a few tanks)
Avoid shifting manually under 2.5k unless you’re cruising
Transmission fluid service (even though “lifetime”) is smart at 60–80k
Final Thought
This isn’t a Mustang or a WRX — it’s a muscular cat in a tuxedo. Every upgrade should make it feel more confident, not more agitated. You’ll get more admiration at a Cars & Coffee for a clean, whispering predator than a loud one with bolt-on wings.
Welcome to the forum and to the world of Jaguar GTs! The 2015 XKR is a fantastic machine — the last of its kind really — blending brutal supercharged V8 power with elegant long-nose, short-tail design. It’s not a tuner car in the traditional sense, so most of us focus on preserving performance, enhancing reliability, and making tasteful upgrades. Here’s a quick rundown:
Common Checks & First Fixes
Cooling system: The XKR runs hot. Check coolant hoses, water pump, and thermostat. If original, consider replacing.
Supercharger belt & tensioner: Prone to wear. A chirp or squeal is a giveaway.
Timing chain tensioners: Less problematic on 5.0 SC than earlier AJ engines, but worth inspecting if you’re above 60k miles.
Sticky buttons: You found the thread — usually interior plastics reacting to heat/humidity. Clean or reskin are both viable options.
Paint Protection
Ceramic coat is a great first step — easy maintenance and shine.
PPF (Paint Protection Film): Worth it only if you’re protecting a pristine finish or plan on long-term ownership. Start with bumper/hood if cost is a concern.
Mods (Keep It Classy)
This is a grand tourer, not a track car — most owners aim for refinement:
Powder coating the stock wheels: Totally fine, especially if you like black. Avoid cheap jobs — poor prep ruins balance and finish.
Intake/exhaust: K&N drop-in is easy, or VelocityAP makes a mild exhaust kit. Just don’t go straight pipe — kills the refinement.
Carbon fiber: Quality sources are limited. Look at Arden, Paramount Performance, or Maxton Designfor subtle pieces. Avoid eBay specials unless reviewed.
Tune: If you’re itching for more power, a conservative ECU remap from VelocityAP or others can wake it up without pushing stress too far.
Paddle Shifting “Bogging Down”
Yes — this can be normal. The ZF 6HP26 is adaptive and smooth, not lightning-fast.
If it bogs in 1st/2nd:
You may be shifting too early under partial throttle
The transmission may still be adapting to your style (give it a few tanks)
Avoid shifting manually under 2.5k unless you’re cruising
Transmission fluid service (even though “lifetime”) is smart at 60–80k
Final Thought
This isn’t a Mustang or a WRX — it’s a muscular cat in a tuxedo. Every upgrade should make it feel more confident, not more agitated. You’ll get more admiration at a Cars & Coffee for a clean, whispering predator than a loud one with bolt-on wings.
thank you so much for that reply. Thank you for the time that I know that took to give me information and help me out.
is the air intake tube kit at Mina Gallery for $245 worth it?
The thing I’d look at first is the black PA-12 tubing that runs around the engine. It gets brittle with age and heat.
There’s a production date code printed on it. If it’s over 5 years old, I’d replace it. The one that feeds your throttle body gets quite hit.