Land Rover›Discovery (VIN:4)›2003›Overview/land-rover/discovery-vin-4/2003/base/

2003 Land Rover Discovery (VIN:4)

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 Discovery (VIN:4).

Body SUVTransmission Automatic 4-spd

The 2003 Land Rover Discovery is an SUV that calls for 6.1 qt of 5W‑40/5W‑50 oil and is mated to a 4‑speed automatic transmission, delivering EPA‑rated fuel economy of 11/14/12 mpg. These specifications sit alongside a reliability record that shows 111 total owner complaints, with the engine and engine cooling system as the top problem area, and four recalls issued for the year. Taken together, the 2003 model represents a notably trouble‑prone point in the Discovery’s history, underscoring the importance of attentive maintenance for owners.

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity6.1 qtOEM · verified
Engine oil type5W-40 / 5W-50 APIOEM · verified
Lug nut torque103 ft-lbsOEM · verified
EPA fuel economy11/14/12 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 24 · 590 CCA battery, OE oil filter ERR3340. 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.

Battery groupBCI 24 · 590 CCAOEM · verified

OE service part numbers OEM · verified

Engine oil filterERR3340
Engine air filterLR027408
Spark plugNLP100320
Front wiper bladesDKC100960
Serpentine beltERR6898 alt ERR6899
ThermostatPEM100990

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length183.9 in
Overall width74.4 in
Overall height76.4 in
Wheelbase100 in
Curb weight4575 lb
Track (front / rear)61 / 60.6 in
Weight distribution (front / rear)47/53

Ratings & economy EPA / vPIC

EPA city / highway / combined11 / 14 / 12 mpg
Drivetrain4-Wheel or All-Wheel Drive
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 6.1 qt of 5W-40 / 5W-50 API engine oil. Torque lug nuts to 103 ft-lbs, the oil drain plug to 24.0 ft-lbs.

Lubricants & capacities

Engine Oil5W-40 · 5W-50 · API
Engine Oil Capacity6.1 qt

Engine torques

Crankshaft Pulley and/or Damper Bolts200 ft-lbs
Engine Flywheel Bolts44 ft-lbs
Engine Oil Pan Drain Plug24.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs17 ft-lbs

Chassis torques

Lug Nuts103 ft-lbs
Transfer Case Fill Plug18.0 ft-lbs
Transfer Case Drain Plug22.0 ft-lbs
Automatic Transmission Drain Plug11.0 ft-lbs

Ignition

Curb Idle Speed (No Load)660 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug ManufacturerLand Rover
Spark Plug Gap0.038-0.043 in
Spark Plug Torque15.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant CapacityOn models equipped less rear A/C, 1.54; w/rear A/C, 1.98. lbs
Oil GroupPAG
Oil Type46
Oil Capacity6.09 oz
RefrigerantR134a
Oil TypeND 8 oil
Oil Capacity6.09 oz

Service checks

Engine Oil Pressure34-37 psi
Engine Oil Pressure RPM2500 rpm
Intake Valve LashHydraulic in
Exhaust Valve LashHydraulic in

Brakes

Torque Caliper to Bracket22 ft-lbs
Torque to Knuckle129 ft-lbs / 70 ft-lbs
Minimum Pad Thickness0.079 in
Rotor Runout Limit0.006 in
Rotor Nominal Thickness From0.988 in / 0.5 in
Rotor Nominal Thickness To0.98 in / 0.492 in
Rotor Discard at or Under0.866 in / 0.461 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
115 ft. lbs., Step 2: 8015 ft. lbs
Intake Manifold to Engine Bolts — tightening sequence 1 stages
17 ft. lbs., step 2: 387 ft. lbs
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages
111 ft. lbs., step 2: 2811 ft. lbs
Main Bearings — tightening sequence 1 stages
1Tighten all bolts to 10 ft. lbs., Step 2: Bolts 1-8: 53 ft. lbs., Step 3: Bolts 9-10: 68 ft. lbs., Step 4: Side bolts: 3310 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the spark plugs every 52,500 mi.

At 7,500 miDrive Axle Assembly (drain & refill)
Every 7,500 miBrake Drum Assembly (inspect) · Brake Linings (inspect) · Brake Rotor (inspect) · Brake System (inspect) · Clutch Assembly (inspect) · Clutch Hydraulic Line (inspect)
Every 15,000 miBody Latches, Locks & Hinges (inspect) · CV Joint Boot (inspect) · Door Stop (lubricate) · Driveshaft U-Joint (lubricate) · Parking Brake Linkage (lubricate) · Power Steering System (inspect)
At 30,000 miTransmission Filter (replace)
Every 30,000 miBattery (inspect) · Brake Hydraulic System (drain, refill & bleed) · Engine Air Filter Element (replace) · Keyless Entry Remote Battery (replace) · Transfer Case Assembly (drain & refill) · Transmission Assembly (drain & refill)
Every 45,000 miDrive Belt (replace) · Engine Mount (inspect) · Steering Gear Box Assembly (inspect)
Every 52,500 miDistributor Cap (inspect) · Distributor Rotor (inspect) · Fuel Evaporative Emission Control System (inspect) · Spark Plug Wires (inspect)
Every 60,000 miActive Suspension System Air Filter (replace) · Fuel Filter (replace) · Spark Plugs (replace)
Every 75,000 miStability & Traction Control System Fluid Filter (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Owner complaints about the 2003 Land Rover Discovery (VIN:4) lead in one area — the engine & engine cooling, 31 of 111 reports (28%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 13 of the reports describe a crash and 4 a fire — a small share of the total, but worth weighing against the engine & engine cooling pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

4
Open recalls
NHTSA campaigns
16
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
111
Owner complaints
13 involved a crash · 4 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 111 complaints on record, top 8 components.

Engine & Engine Cooling31
Service Brakes, Hydraulic12
Engine11
Power Train9
Vehicle Speed Control7
Structure2
Electrical System2
Service Brakes, Hydraulic,Traction Control System2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 16 bulletins on record with NHTSA.

BulletinDateComponentSummary
SFCC_08MAR18_162018-03-08Electrical SystemThe 'Service Required' warning text will not appear on the Instrument Cluster (IC) if a…
SFCC-14SEP172017-09-14EquipmentPresentation from Dealer Shop Foreman Conference Call
SSM564572014-10-28Fuel System, Gasoline"ISSUE: REPORTS HAVE BEEN RECEIVED OF ENGINE DAMAGE OCCURRING, WHICH IS CAUSED BY THE USE…
LTB00389NAS32013-11-19EquipmentTechnical Bulletin: Squeaks & Rattles Kit Availability
SSM683782013-09-23Equipment"ISSUE: THIS SSM HAS BEEN RELEASED TO ADDRESS THE HIGH NUMBER OF SPEAKER ASSEMBLIES…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Discovery (VIN:4). OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group 24 batteryVehicles taking 6.1 qtEngine oil filter ERR3340Engine air filter LR027408Spark plug NLP100320Front wiper blades DKC100960

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBsOBD-II trouble codesTorque specificationsMaintenance schedulesFluid capacities & specs

Frequently asked

How much oil does the 2003 Discovery (VIN:4) take?

6.1 qt of 5W-40 OR 5W-50 API SM, per the factory manual.

Does the 2003 Discovery (VIN:4) have open recalls?

NHTSA lists 4 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Discovery (VIN:4) get?

EPA figures are 11 city / 14 highway / 12 combined mpg.