Lexus IS (XE10) Common Problems & Reliability
The first-generation Lexus IS (XE10) arrived in the UK in May 1999 as a direct and ambitious rival to the BMW 3 Series. Known originally as the IS 200, it featured a characterful 2.0-litre straight-six (1G-FE) paired with a sweet six-speed manual gearbox or four-speed automatic, driving the rear wheels through double-wishbone suspension at both axles. Stylistically distinct, the XE10 pioneered the chronometer-style instrument cluster, machined metal gear knob, and clear-lens rear lamp clusters that spawned an entire aftermarket trend. In autumn 2001, the range broadened with the 3.0-litre 2JZ-GE straight-six in the IS 300 and the versatile five-door SportCross estate. In Britain, the IS built a passionate following for its engaging rear-drive chassis balance, bulletproof mechanical reliability, and vault-like build quality. Today, it is revered as a modern classic and entry-level enthusiast drift or track car. While engine internals and gearboxes are exceptionally tough, buyers must check for rusted sills and rear wheel arches, worn lower ball joints, and CD changer mechanical errors.
Select a Model Year Period
Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common Lexus IS (XE10) Faults & Repair Costs
Front Lower Suspension Ball Joint Wear and Separation
The front lower ball joints on the XE10 double-wishbone suspension carry substantial dynamic loads. Over time, the internal nylon seat wears out and the protective rubber boot perishes, allowing water and road grit to enter and accelerate wear. In advanced cases, the ball joint develops severe play and can pull out of its housing entirely, causing the front wheel to collapse into the wing. This is a well-known MOT failure and safety risk on older UK cars.
Clunking or knocking noise from the front wheels over small road bumps, Vague or wander in steering feel at motorway speeds, Creaking sound when turning the steering wheel at low speeds or parking, Uneven feathering or wear on the inside shoulder of the front tyres
- Jack up the front corner and rock the wheel vertically to feel for play in the lower ball joint
- Inspect the ball joint rubber dust boot for splits, missing retaining clips, or grease leakage
- Review MOT test history for recurring advisories regarding front suspension pin or bush play
Rear Outer Sill and Wheel Arch Structural Rust
First-generation IS models suffer from serious structural corrosion in the rear outer sills, jacking points, and rear wheel arch seams. Mud and road salt sprayed by the rear tyres collect in the unsealed cavity between the inner arch liner and outer sill panel. In the wet UK climate, moisture sits trapped against the foam sound deadening and untreated metal seams, rotting the sill from the inside out. Once rust bubbles through the exterior paintwork, extensive fabrication and welding are required for MOT compliance.
Visible bubbling or perforation in the paintwork along the sill ends ahead of the rear wheels, Crunching sound when lifting the vehicle on factory jacking points, Flaking rust and road dirt dislodging from behind the rear wheel arch lip, MOT failure for structural corrosion within 30cm of a suspension or seatbelt mounting
- Firmly press along the entire length of the rear sills and jacking points feeling for softness
- Run fingers around the inside lip of both rear arches to check for hidden rust scaling
- Inspect the boot floor side wells under the boot carpet for dampness or water ingress
Buying a used Lexus IS (XE10)? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.