XJ6 (Series I-III)

1968-1992 / Sedan / United Kingdom

All XJ6 (Series I-III) problems All workshop issues

Common Brakes

Caliper seizure

Symptoms

Uneven braking, pulling to one side, excessive heat from one wheel, brake drag.

Cause

Brake caliper pistons seize from corrosion, especially if the car has been sitting for extended periods. Old brake fluid absorbs moisture, which accelerates internal corrosion.

Fix

Rebuild or replace the affected caliper.

Replace all brake fluid with fresh DOT 4 or DOT 5.1.

Inspect all calipers, if one has seized, the others are likely close behind.

Budget $300-600 per caliper.

Cost mentioned in fix

Budget $300-600 per caliper

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// More XJ6 (Series I-III) problems

Other known issues

Critical Brakes

Brake servo failure

Very hard brake pedal, poor stopping performance. The car feels like it has no brakes.

Common Brakes

Brake disc warping

Judder through the steering wheel or brake pedal under braking.

Minor Bodywork and Rust

Sill corrosion (structural)

Outer sills bubble and perforate. Inner sills rot silently behind trim. The car's rigidity decreases, doors sag, gaps become uneven, and the body flexes over bumps.

Minor Bodywork and Rust

Floor pan corrosion

Floor pans rot from underneath or from above (water sitting under carpets). In severe cases, you can see the road through the floor.

Common Bodywork and Rust

Rear wheel arch and lower rear quarter corrosion

Rust appears at the bottom of the rear wings, around the wheel arches, and in the lower panels between the wheels and boot.

Common Bodywork and Rust

Boot floor and spare wheel well corrosion

The boot floor rusts through, the spare wheel well fills with water, and the rot spreads to surrounding panels.

View all 28 XJ6 (Series I-III) problems