EraCars / Jaguar XKR (X100 / X150)
Jaguar XKR (X100 / X150) (1998–2014)
X100 / X150 · X100: AJ-V8 SC · X150: 4.2/5.0 SC V8
At a glance
Risk 4/5 Market: X100 = tensioners; X150 = service history
Must-have records:
- X100: metal timing tensioners/guides and metal-impeller water pump
- Annual oil-change records
- X150: thermostat / radiator service
- Convertible: roof hydraulics
Live listings
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Parts & tools: Shop parts at Summit Racing.
Buy-risk rundown
| Issue | Symptom | How to check | Typical cost (as of Nov 2026) |
|---|---|---|---|
| X100 plastic timing tensioners / guides (esp. pre-2003) | Cold-start rattle; potential valve contact if chain jumps | Confirm updated metal-backed parts | Specialist chain/tensioner jobs often ~£1,200–£1,260 (UK) or ~$1,600 US owner reports [1][2][3] |
| X100 plastic-impeller water pump | Overheating; impeller shreds | Confirm metal impeller replacement | Parts ~$120–$130 class; labor varies [4][1] |
| X150 cooling (thermostat, radiator blockage) | Overheat warnings | Confirm recent cooling work | Not yet verified [5] |
| X150 XKR supercharger / VVT hydraulic rattle | Rattle from VVT hydraulics | Cold start listen | Not yet verified [5] |
| Convertible roof (both generations) | Fails mid-cycle; leaks | Full open/close cycle | Not yet verified |
Cost figures checked against the sources below in Nov 2026. Bracketed numbers refer to the source list.
Notes
- X100 (1996–2006 XK8/XKR) and X150 (2006–2014 XK/XKR) are different cars under the skin; don't mix checklists.
- Prestige & Performance and PH both treat tensioners as the X100 headline risk [1][2].
Before you buy
Use our printable pre-purchase inspection checklist and get a PPI from a marque specialist.
Sources
- Prestige & Performance Car, XKR X100 buyer's guide (accessed Nov 2026)
- PistonHeads, X100 XK8/XKR powertrain buying guide (accessed Nov 2026)
- xk8-parts.com, Timing chains, tensioners and peace of mind (PDF) (accessed Nov 2026)
- Jagbits, XK8/XKR water pumps (accessed Nov 2026)
- PistonHeads, XK X150 used buying guide (accessed Nov 2026)
Last updated 2026-11-05. Costs vary by region and shop.
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