LEXUS RX400 (2008)
Running costs, reliability data, and common problems from 40 real MOT tests.
Annual Cost
£1,450
£121/month
MOT Pass Rate
68%
Below Avg
Road Tax
£195
Based on CC/year
Insurance
Grp 35-50
3311cc Electric
Proceed With Caution
68% pass rate, £1450/year to run. 14 points below average.
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Annual Running Costs
Based on 3311cc
Higher estimate due to low pass rate
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Below average reliability. Budget extra for maintenance and repairs. That's 14 points below the national average of 82%. It falls below the LEXUS brand average of 87%.
At 18 years old, 68% of LEXUS RX400s from 2008 passed their MOT first time in 2026. That's based on 40 tests across the UK. The average mileage at this age is 139,886 miles.
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How Does It Compare?
Mileage Analysis
139,886
Average miles
133,200
Expected for age
The average 2008 LEXUS RX400 has 139,886 miles on the clock, which is in line with the expected 133,200 miles for a 18-year-old car, suggesting normal everyday use.
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LEXUS RX400 by Year
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About the 2008 LEXUS RX400
The 2008 LEXUS RX400 is a electric with a 3311cc electric engine. 40 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 89% of 2008 cars for MOT pass rates.
With an average of 139,886 miles at 18 years old, LEXUS RX400 owners drive about as much as the UK average.
What does it cost to own a 2008 LEXUS RX400?
Total estimated annual running cost is £1,450 (£121/month), broken down as £500 fuel, £195 road tax, £55 MOT, and £700 predicted repairs. The higher repair estimate reflects the 68% MOT pass rate. Cars in this bracket tend to need work on suspension, brakes, and emissions components.
Buying a Used 2008 LEXUS RX400
At 18 years old, the LEXUS RX400 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. Note: with only 40 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2008 LEXUS RX400's fuel type, age, and engine size, these are the most likely problem areas to check.
Battery Degradation
Watch outAfter 18 years, expect some battery capacity loss. Check the battery health report for state of health (SoH). Below 80% significantly reduces range.
Charging Port
Medium riskCharging connectors and ports can develop issues from regular use. Check both AC and DC charging work correctly before purchasing.
Software Updates
Medium riskOlder EVs may miss out on manufacturer software updates that improve range and features. Check the infotainment system is up to date.
12V Auxiliary Battery
Medium riskEVs still have a standard 12V battery for accessories. These drain faster than in petrol cars and can leave you stranded if flat. Replacement is £100-£200.
Rust and Corrosion
Watch outAt 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 outRubber 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 outWith an average of 140k 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 riskHigh-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 riskWorn engine mounts cause excessive vibration and movement. Replacement costs £150-£400 per mount. Check for vibration at idle with the bonnet open.
Higher Than Average Failure Rate
Watch outWith a 68% MOT pass rate, this model fails more often than most. Budget for unexpected repairs and get a thorough pre-purchase inspection.
Service History
Low riskAlways 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 2008 LEXUS RX400 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| LEXUS RX400(2008) | 68% | £500 | £195 | Grp 35-50 | £1450 |
| ISUZU RODEO(2006) | 72% | £500 | £250 | Grp 30-42 | £1305-£145 |
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.
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