Is the 2015 LEXUS IS300 reliable?

Excellent reliability. Very few MOT failures. 93% of LEXUS IS300s from 2015 passed their MOT first time in 2026, based on 45 tests. That's 11 points above the national average of 82%.

How much does a 2015 LEXUS IS300 cost to run?

Estimated annual running cost is £2,277 (£190/month), including £1592 fuel, £430 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2015 LEXUS IS300?

The 2015 LEXUS IS300 has a 93% MOT pass rate based on 45 tests in 2026. This ranks 114 out of 559 cars from 2015.

Which year LEXUS IS300 is most reliable?

The 2016 LEXUS IS300 has the highest MOT pass rate at 98%. The least reliable year is 2001 at 73%.

LEXUS IS300 (2015)

Q: What is the average mileage for a 2015 LEXUS IS300?

The average mileage for a 2015 LEXUS IS300 is 108,740 miles, which is above the expected 81,400 miles for a 11-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.

Running costs, reliability data, and common problems from 45 real MOT tests.

Annual Cost

£2,277

£190/month

MOT Pass Rate

93%

Excellent

Road Tax

£430

Based on CC/year

Insurance

Grp 25-38

2494cc Hybrid

Great Choice

93% pass rate, £2277/year to run. 11 points above average.

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Hybrid2494cc11 years old45 tests109k miles avg

Annual Running Costs

Fuel (Hybrid, 2494cc)

~30 mpg

£1,592

Road Tax

Based on 2494cc

£430

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,277

Per month£190/mo

Per week£44/wk

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

93% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the LEXUS brand average of 87%.

At 11 years old, 93% of LEXUS IS300s from 2015 passed their MOT first time in 2026. That's based on 45 tests across the UK. The average mileage at this age is 108,740 miles.

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How Does It Compare?

Rank among 2015 cars114th of 559(top 20%)

Rank among LEXUS models81th of 301(top 27%)

vs national average+11%(82% avg)

vs 2015 cars average+10%(83% avg)

vs LEXUS average+6%(87% avg)

Mileage Analysis

108,740

Average miles

81,400

Expected for age

The average 2015 LEXUS IS300 has 108,740 miles on the clock, which is above the expected 81,400 miles for a 11-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.

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Best Year to Buy?

The most reliable year is the 2016 model with a 98% MOT pass rate, while the 2001 model has the lowest at 73%. The 2015 sits between the two at 93%.

LEXUS IS300 by Year

Year	Pass Rate	Tests	Avg Mileage
2018	100%	31	33,082 mi
2017	83%	47	44,028 mi
2016	98%	54	83,188 mi
2015	93%	45	108,740 mi
2014	75%	57	105,616 mi
2013	72%	32	165,163 mi
2005	90%	105	108,662 mi
2004	80%	265	111,202 mi
2003	80%	293	114,003 mi
2002	84%	361	121,943 mi
2001	73%	125	126,707 mi

Similar Cars to Consider

MITSUBISHI OUTLANDER

2015 · 1998cc Hybrid

£1,867/year

83%

-10%

BMW X5

2016 · 2000cc Hybrid

£1,717/year

92%

-1%

LEXUS NX

2017 · 2494cc Hybrid

£2,037/year

94%

+1%

KIA OPTIMA

2017 · 1999cc Hybrid

£1,922/year

87%

-6%

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About the 2015 LEXUS IS300

The 2015 LEXUS IS300 is a premium with a 2494cc hybrid engine. 45 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 20% of all 2015 cars for reliability.

With an average of 108,740 miles at 11 years old, LEXUS IS300 owners cover more miles than the average driver.

2015 LEXUS IS300 Fuel Costs

The 2494cc hybrid engine offers a reasonable balance between performance and economy. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.

What does it cost to own a 2015 LEXUS IS300?

Total estimated annual running cost is £2,277 (£190/month), broken down as £1592 fuel, £430 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

LEXUS IS300 Reliability Trend

Newer LEXUS IS300s show better MOT pass rates than older ones, with an average improvement of 7 percentage points.

Buying a Used 2015 LEXUS IS300

At 11 years old, the LEXUS IS300 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 2016 model has the highest pass rate at 98%. Note: with only 45 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 2015 LEXUS IS300's fuel type, age, and engine size, these are the most likely problem areas to check.

Hybrid Battery Health

Watch out

After 11 years, hybrid battery capacity may have reduced. A full replacement costs £2,000-£4,000, though reconditioning is cheaper at £500-£1,500.

Inverter and Power Electronics

Medium risk

The inverter converts DC to AC for the electric motor. Failures are expensive (£1,500+) but relatively rare. Listen for unusual buzzing sounds.

Regenerative Braking

Medium risk

Brake discs can corrode from reduced use (the electric motor handles most braking). Surface rust is normal but deep pitting needs attention.

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 109k 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 2015 LEXUS IS300 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
LEXUS IS300(2015)	93%	£1592	£430	Grp 25-38	£2277
MITSUBISHI OUTLANDER(2015)	83%	£1327	£135	Grp 18-32	£1867-£410
BMW X5(2016)	92%	£1327	£135	Grp 18-32	£1717-£560
LEXUS NX(2017)	94%	£1592	£190	Grp 25-38	£2037-£240
KIA OPTIMA(2017)	87%	£1327	£190	Grp 18-32	£1922-£355

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.