How much does a 2003 LEXUS GS430 cost to run?

Estimated annual running cost is £2,757 (£230/month), including £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs.

What is the MOT pass rate for a 2003 LEXUS GS430?

The 2003 LEXUS GS430 has a 83% MOT pass rate based on 84 tests in 2026. This ranks 72 out of 445 cars from 2003.

Which year LEXUS GS430 is most reliable?

The 2001 LEXUS GS430 has the highest MOT pass rate at 91%. The least reliable year is 2002 at 82%.

LEXUS GS430 (2003)

Q: Is the 2003 LEXUS GS430 reliable?

Good reliability. Occasional issues but generally solid. 83% of LEXUS GS430s from 2003 passed their MOT first time in 2026, based on 84 tests. That's 1 points above the national average of 82%.

Q: What is the average mileage for a 2003 LEXUS GS430?

The average mileage for a 2003 LEXUS GS430 is 113,842 miles, which is below the expected 170,200 miles for a 23-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 84 real MOT tests.

Annual Cost

£2,757

£230/month

MOT Pass Rate

83%

Good

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

4293cc Petrol

Solid Option

83% pass rate, £2757/year to run. Close to the national average.

Buying this car? Check for finance, write-offs & theft

£4.99

Check a specific LEXUS GS430

Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.

Petrol4293cc23 years old84 tests114k miles avg

Annual Running Costs

Fuel (Petrol, 4293cc)

~30 mpg

£1,592

Road Tax

Based on 4293cc

£760

MOT Test

£55

Predicted Repairs

£350

Total per year£2,757

Per month£230/mo

Per week£53/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

🛡️

Get an insurance quote for this LEXUS GS430

Compare quotes and find the best deal

Reliability Verdict

83% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the LEXUS brand average of 87%.

At 23 years old, 83% of LEXUS GS430s from 2003 passed their MOT first time in 2026. That's based on 84 tests across the UK. The average mileage at this age is 113,842 miles.

Got a LEXUS GS430 you're looking at?

Enter the reg plate to check its specific MOT history, mileage, and health score.

How Does It Compare?

Rank among 2003 cars72th of 445(top 16%)

Rank among LEXUS models203th of 301(top 67%)

vs national average+1%(82% avg)

vs 2003 cars average+11%(72% avg)

vs LEXUS average-4%(87% avg)

Mileage Analysis

113,842

Average miles

170,200

Expected for age

The average 2003 LEXUS GS430 has 113,842 miles on the clock, which is below the expected 170,200 miles for a 23-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Looking at a specific LEXUS GS430?

Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.

Best Year to Buy?

The most reliable year is the 2001 model with a 91% MOT pass rate, while the 2002 model has the lowest at 82%. The 2003 sits between the two at 83%.

LEXUS GS430 by Year

Year	Pass Rate	Tests	Avg Mileage
2006	79%	34	114,262 mi
2005	84%	241	119,536 mi
2003	83%	84	113,842 mi
2002	82%	83	117,306 mi
2001	91%	99	123,832 mi

Similar Cars to Consider

LAND ROVER RANGE ROVER SPORT

2005 · 4394cc Petrol

£2,247/year

82%

-1%

PORSCHE 911

2005 · 3824cc Petrol

£2,097/year

90%

+7%

LAND ROVER RANGE ROVER

2003 · 3950cc Petrol

£2,397/year

77%

-6%

ROVER 75

2004 · 4601cc Petrol

£2,597/year

69%

-14%

Check a Specific Lexus Gs430

Enter a reg plate to get the full MOT history, health score, and mileage verification.

Upgrade to Premium (£4.99) for stolen, finance, and write-off checks.

About the 2003 LEXUS GS430

The 2003 LEXUS GS430 is a premium performance with a 4293cc petrol engine. 84 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 16% of all 2003 cars for reliability.

With an average of 113,842 miles at 23 years old, LEXUS GS430 owners tend to use this car less than the typical driver.

2003 LEXUS GS430 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 £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 2003 LEXUS GS430?

Total estimated annual running cost is £2,757 (£230/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 83% pass rate. Keeping on top of servicing will help avoid surprises.

LEXUS GS430 Reliability Trend

The LEXUS GS430 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.

Buying a Used 2003 LEXUS GS430

At 23 years old, the LEXUS GS430 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. If you're flexible on year, the 2001 model has the highest pass rate at 91%. Note: with only 84 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 2003 LEXUS GS430's fuel type, age, and engine size, these are the most likely problem areas to check.

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 114k 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.

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 GS430 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
LEXUS GS430(2003)	83%	£1592	£760	Grp 35-50	£2757
LAND ROVER RANGE ROVER SPORT(2005)	82%	£1592	£250	Grp 35-50	£2247-£510
PORSCHE 911(2005)	90%	£1592	£250	Grp 35-50	£2097-£660
LAND ROVER RANGE ROVER(2003)	77%	£1592	£250	Grp 35-50	£2397-£360
ROVER 75(2004)	69%	£1592	£250	Grp 35-50	£2597-£160

Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.