Lexus GS450H Reliability, MOT Pass Rate & Common Faults
Free Lexus GS450H car check
Is the Lexus GS450H reliable? We analysed 31,026 real MOT tests across 2,030 vehicles to find out.
Got a specific Lexus GS450H? Enter the reg for a free check:
The Lexus GS450H is above average for reliability based on real UK MOT data. Common problems include tyre tread depth below requirements of 1.6mm, shock absorber has a serious fluid leak and tyre has ply or cords exposed. Here's everything you need to know before buying a used Lexus GS450H.
Lexus GS450H Number Plates
Number plates registered to a Lexus GS450H. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Lexus GS450H MOT Pass Rate by Year
How likely is a Lexus GS450H to pass its MOT? Here's the pass rate for each registration year, newest first.
Lexus GS450H Problems — What Goes Wrong?
The most common reasons a Lexus GS450H fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Lexus GS450H Common Faults & Problems
These are the most common serious faults found on Lexus GS450H models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Lexus GS450H Mileage — What's Normal?
How many miles does a typical Lexus GS450H owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Lexus GS450H MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Lexus GS450H year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2012 | 261 | 90.0% | 44,450 | 62,315 | 87,402 |
| 2011 | 95 | 90.5% | 33,276 | 61,130 | 84,888 |
| 2010 | 1,162 | 85.5% | 39,273 | 63,898 | 92,342 |
| 2009 | 3,979 | 83.5% | 43,988 | 69,786 | 99,884 |
| 2008 | 7,455 | 82.5% | 46,872 | 75,118 | 109,632 |
| 2007 | 9,726 | 80.4% | 52,228 | 81,474 | 115,198 |
| 2006 | 8,172 | 80.2% | 51,233 | 81,630 | 114,955 |
| 2005 | 53 | 79.2% | 28,062 | 55,552 | 111,308 |
How Long Does a Lexus GS450H Last?
Based on 2,030 Lexus GS450H vehicles on UK roads.
Lexus GS450H Mileage Distribution
Total mileage recorded across all Lexus GS450H MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Lexus GS450H
Based on MOT pass rates across all registration years with sufficient test data.
90.5% MOT pass rate from 95 tests
79.2% MOT pass rate from 53 tests
The best year to buy a used Lexus GS450H is 2011, which has the highest MOT pass rate at 90.5% across 95 tests. The 2005 model year has the lowest pass rate at 79.2% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Lexus GS450H Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Lexus GS450H THIS CAR | 81.5% | 31,026 | 77,280 mi | 20 yrs |
| Lexus IS200 | 75.4% | 546,826 | 87,139 mi | 27 yrs |
| Lexus Ct | 86.8% | 304,916 | 55,351 mi | 15 yrs |
| Lexus RX300 | 79% | 229,652 | 83,424 mi | 26 yrs |
| Honda Civic Crx | 67.9% | 37,654 | 104,838 mi | 39 yrs |
Compared to the Lexus IS200 (75.4% pass rate) and the Lexus Ct (86.8% pass rate), the Lexus GS450H sits in the middle of the pack on MOT reliability.
Found a Lexus GS450H you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Lexus GS450HShould you buy a used Lexus GS450H?
The Lexus GS450H has an overall MOT pass rate of 81.5% across 31,026 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Lexus GS450H are tyre tread depth below requirements of 1.6mm (682 recorded failures), shock absorber has a serious fluid leak (454), and tyre has ply or cords exposed (273). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Lexus GS450H with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical Lexus GS450H owner drives around 6,099 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
In terms of longevity, most Lexus GS450H models stay on UK roads for around 20 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.