A genuinely striking executive saloon paired with Jaguar's meaningfully improved AJ133 V8 — the direct answer to the earlier AJ-V8's well-documented timing chain concerns found on the older XJ and S-Type.
The XF's modern platform and this meaningfully revised V8 are a genuinely well-sorted pairing, free of the earlier generation's documented chain tensioner concerns covered elsewhere on this site.
If you've read about the older AJ-V8's issues on the XJ or S-Type pages and that's given you pause about Jaguar generally, this engine generation is the direct answer to that concern.
This is about the car itself — for engine-specific failure points, see the dedicated engine page below.
This XF is a defining application of the meaningfully improved AJ133 V8. Full detail on this engine's stronger reliability track record lives on the dedicated engine page.
FULL ENGINE BREAKDOWNJaguar 5.0L V8 (AJ133) — Reliable or Not →Ask for documented service history, since this engine, like any high-output design, rewards consistent maintenance.
On supercharged versions, have a specialist check belt condition and listen for any unusual whine or noise change under boost.
If the car has air suspension, cycle it through its settings and confirm it holds height overnight.