Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
| Every 10,000 mi | Engine Coolant System (leak inspection) |
Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1998 XJ8.
The 1998 Jaguar XJ8 is a luxury sedan equipped with a 5-speed automatic transmission and EPA fuel economy ratings of 16 mpg city, 22 mpg highway, and 18 mpg combined. Among model years spanning 1998 to 2006, the 1998 XJ8 recorded the highest total owner complaints at 84, with engine and engine cooling emerging as the top complaint area, and one recall issued for the model year. This elevated complaint volume during the 1998 model year established the baseline against which subsequent years showed marked improvement, with 2006 ultimately recording just 4 complaints—the series low. For researchers examining this generation, the 1998 model year represents both the peak of reported issues and a critical reference point for understanding the vehicle's reliability trajectory over its production run.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI 49 · 680 CCA battery. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
| Engine air filter | NJA3558AA |
| Fuel filter | C2C35417 alt NJB6091AA |
| Spark plug | C2A1535 |
| Battery | C2D61169 |
| Front wiper blades | GJA8960BB |
| Thermostat | NCA2246BA alt AJ86484 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic 5-spd |
| Overall length | 197.6 in |
| Overall width | 70.9 in |
| Overall height | 52.8 in |
| Wheelbase | 113 in |
| Curb weight | 3997 lb |
| Track (front / rear) | 59.1 / 59.1 in |
| EPA city / highway / combined | 16 / 22 / 18 mpg |
| Drivetrain | Rear-Wheel Drive |
| Passenger volume | 94 cu ft |
| Cargo volume | 12 cu ft |
| Recommended fuel | Premium Gasoline |
Capacities, torques and tune-up values from the factory service manual.
This engine USE SHELL SPIRAX TS90 OR EQUIVALENT in the differential, DOT 4 brake fluid. Torque lug nuts to 75 ft-lbs. The firing order is 1-5-4-2-6-3-7-8.
| Brake Fluid | DOT 4 |
| Differential Gear Oil | USE SHELL SPIRAX TS90 OR EQUIVALENT |
| Differential Gear Oil Capacity | 3 Pints |
| Power Steering Fluid | ATF |
| Camshaft Bearing/Carrier Cap Bolts or Studs | 8.0 ft-lbs |
| Intake Manifold to Engine Bolts | 15-16 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 13 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 9 ft-lbs |
| Lug Nuts | 75 ft-lbs |
| Rear Wheel Hub | 236 ft-lbs |
| Cylinder Firing Order | 1-5-4-2-6-3-7-8 |
| Spark Plug Gap | 0.035-0.039 in |
| Spark Plug Torque | 11.0 ft-lbs |
| Refrigerant | R134a |
| Refrigerant Capacity | 1.42-1.53 lbs |
| Oil Type | PAG |
| Oil Capacity | 5.44-6.80 oz |
| Standard BCI Group Number | 49 |
| Standard BCI Cranking Performance | 680 cca |
| Injector Primary Resistance | 12-18 ohms |
| Intake Valve Lash | 0.0008 in |
| Exhaust Valve Lash | 0.0014 in |
| Torque Caliper to Bracket | 40-120 ft-lbs / 18-22 ft-lbs |
| Torque to Knuckle | 94 ft-lbs / 40-52 ft-lbs |
| Rotor Runout Limit | 0.004 in / 0.006 in |
| Rotor Nominal Thickness From | 1.103 in / 0.768 in |
| Rotor Nominal Thickness To | 1.103 in / 0.768 in |
| Rotor Discard at or Under | 1.024 in / 0.728 in |
Normal service, condensed from the factory interval matrix.
| Every 10,000 mi | Engine Coolant System (leak inspection) |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 1998 XJ8 recorded 84 complaints — far exceeding the 11 in 1999, 14 in 2001, and 4 in 2006 — marking it as the clear peak of the generation's federal complaint arc. Recalls held at one per year through 2001 before dropping to zero in 2006, while TSBs remained constant at 13 across all recorded years and investigations never opened. The 1998 complaint concentration centered on Engine & Engine Cooling (27), Vehicle Speed Control (10), Power Train (9), and Electrical System (8), with three crash and one fire complaint reported; the data does not specify root causes for these patterns. The sharp decline after the debut year suggests early production or design issues were largely addressed by 1999. Buyers should treat the 1998 as the highest-risk model year in this dataset, suitable only with thorough pre-purchase inspection and service records confirming resolution of the dominant complaint categories.
All 84 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 1 of 1 campaigns on record for this vehicle.
CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18… Remedy: HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION…
Showing 5 of 13 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| SSM59597Attachme | 2021-04-14 | Electrical System | Attachment. |
| SSM59597Attachme | 2021-04-14 | Electrical System | Attachment. |
| SSM59597Attachme | 2021-04-14 | Electrical System | Attachment. |
| SFCC_09AUG18_REV | 2018-08-20 | Electrical System | A customer may report "Hood Open" message displays on IP with hood closed. |
| SFCC_09AUG18_REV | 2018-08-20 | Equipment | SIM card activation issues |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 16 city / 22 highway / 18 combined mpg.