Lexus LS430 (2003)

Estimated running costs and MOT pass rates from 304 MOT tests in 2024.

Annual Cost

£3,153

£263/month

MOT Pass Rate

88%

Good

Road Tax

£790

Estimated/year

Est. Insurance

Grp 35-50

4293cc Petrol

Solid Option

88% pass rate, £3,153/year to run. 6 points above average.

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Petrol4293cc23 years old304 tests131k miles avg

Annual Running Costs

Fuel (Petrol, 4293cc)

~30 mpg

£1,958

Road Tax

Estimated CO2 band

£790

MOT Test

£55

Predicted Repairs

£350

Total per year£3,153

Per month£263/mo

Per week£61/wk

Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included.

Reliability Verdict

88% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 6 points above the average of 82% across all models in our data.

88% of MOT tests on Lexus LS430s from 2003 ended in a pass in 2024, when they were about 21 years old. That's based on 304 tests across the UK, retests included. The average mileage recorded at those tests was 130,739 miles.

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How Does It Compare?

Rank among 2003 models31st of 429(top 8%)

Rank among Lexus models131st of 298(top half)

vs average of all models+6%(82% avg)

vs 2003 models average+16%(72% avg)

vs Lexus average+1%(87% avg)

Mileage Analysis

130,739

Average miles

155,400

Expected for age

The average 2003 Lexus LS430 had 130,739 miles on the clock at its 2024 MOT, which is in line with the expected 155,400 miles for a 21-year-old car, suggesting normal everyday use.

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Lexus LS430 by Year

Year	Pass Rate	Tests	Avg Mileage
2006	86%	146	128,198 mi
2005	87%	464	128,795 mi
2004	84%	521	131,154 mi
2003	88%	304	130,739 mi
2002	87%	293	135,316 mi
2001	83%	289	130,783 mi
2000	89%	46	148,678 mi

Similar Cars to Consider

Land Rover Range Rover Sport

2005 · 4394cc Petrol

£3,153/year

82%

-6%

Porsche 911

2005 · 3824cc Petrol

£3,003/year

90%

+2%

Land Rover Range Rover

2003 · 3950cc Petrol

£3,303/year

77%

-11%

Rover 75

2004 · 4601cc Petrol

£3,503/year

69%

-19%

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About the 2003 Lexus LS430

The 2003 Lexus LS430 is a premium performance car. Our records list a 4293cc petrol engine, though engines vary between versions. 304 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It ranks in the top 8% of all 2003 models for MOT pass rate.

With an average of 130,739 miles recorded at its 2024 MOT tests, Lexus LS430 owners drive about as much as the UK average.

2003 Lexus LS430 Fuel Costs

The 4293cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).

What does it cost to own a 2003 Lexus LS430?

Total estimated annual running cost is £3,153 (£263/month), broken down as £1,958 fuel, £790 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.

Lexus LS430 Reliability Trend

The Lexus LS430 has maintained consistent MOT pass rates across model years, varying by only 0 percentage points.

Buying a Used 2003 Lexus LS430

At 23 years old, the Lexus LS430 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age.

Common Issues to Watch For

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

Timing Chain / Belt

Watch out

At 23 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Clutch Wear

Watch out

With an average of 131k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Engine Mounts

Medium risk

Worn engine mounts cause excessive vibration and movement. Replacement costs £150-£400 per mount. Check for vibration at idle with the bonnet open.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2003 Lexus LS430 stacks up against similar cars for estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Lexus LS430(2003)	88%	£1,958	£790	Grp 35-50	£3,153
Land Rover Range Rover Sport(2005)	82%	£1,958	£790	Grp 35-50	£3,153same
Porsche 911(2005)	90%	£1,958	£790	Grp 35-50	£3,003-£150
Land Rover Range Rover(2003)	77%	£1,958	£790	Grp 35-50	£3,303+£150
Rover 75(2004)	69%	£1,958	£790	Grp 35-50	£3,503+£350

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2003 Lexus LS430

Is the 2003 Lexus LS430 reliable?

Good reliability. Occasional issues but generally solid. 88% of MOT tests on 2003 Lexus LS430s ended in a pass, from 304 tests (DVSA MOT data for tests in 2024, retests included). That's 6 points above the average of 82% across all models in the same data.

How much does a 2003 Lexus LS430 cost to run?

Our estimate is £3,153 a year (£263 a month): £1,958 fuel, £790 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2003 Lexus LS430?

88% of 304 MOT tests on the 2003 Lexus LS430 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 31st of 429 models first registered in 2003 (top 8%).

Which year Lexus LS430 has the best MOT pass rate?

Of the years with at least 100 tests, the 2003 Lexus LS430 has the highest MOT pass rate at 88% and the 2001 the lowest at 83%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2003 Lexus LS430?

The average mileage recorded at MOT tests on the 2003 Lexus LS430 is 130,739 miles, which is in line with the expected 155,400 miles for a 21-year-old car, suggesting normal everyday use.