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J258 KBY

1991 Yamaha Unknown

Blue Petrol 535cc
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MOT Status

Valid
Expires2 Feb 2027
Tests7 (7 pass, 0 fail)
Pass rate100%

Mileage

31,070 mi
Last recorded31,070 miles
Recorded on20 Jan 2026
Typical for 1991 Yamaha Unknown18,577 mi

Significantly above average — investigate

4 checks still locked for this Yamaha
Stolen
Finance
Write-off
Keepers
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Vehicle Details

RegistrationJ258 KBY
MakeYamaha
ModelUnknown
Year1991
ColourBlue
Fuel typePetrol
Engine535cc

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50+ data points
Finance Check (Experian) Insurance Write-off Salvage Auction Stolen Check Previous Owners Ex-Taxi, Police, NHS Mileage Anomaly Import / Export Scrapped Check Plate Changes

MOT History

7 pass
Pass 20 Jan 2026 31,070 miles
Pass 3 Feb 2025 31,052 miles
Pass 21 Apr 2023 30,483 miles
Pass 26 Apr 2022 29,774 miles
Pass 12 Sep 2020 29,584 miles
Pass 2 Sep 2019 28,400 miles
Pass 3 Sep 2018 26,939 miles

How Reliable is the Yamaha Unknown?

Based on 20,218 MOT tests across 8,531 vehicles.

86.8%
Pass Rate
257
Miles/Year
52
Year Lifespan
8,531
On UK Roads
Full Yamaha Unknown reliability report

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J258 KBY is a 1991 Yamaha Unknown in Blue with a 535cc petrol engine. This vehicle has been through 7 MOT tests with a personal pass rate of 100%.

Across all 1991 Yamaha Unknown models, the average MOT pass rate is 81.9% with a typical mileage of 18,577 miles. This particular vehicle has performed better than the average for its year.

The Yamaha Unknown typically stays on UK roads for around 52 years. At 35 years old, this Yamaha Unknown is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of J258 KBY?

You can check the full history of J258 KBY by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was J258 KBY registered?

J258 KBY is a 1991 Yamaha Unknown, first registered on 12 August 1991.

Is J258 KBY safe to buy?

The MOT history for J258 KBY shows 7 tests with a 100% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does J258 KBY have outstanding finance?

Finance checks require a premium vehicle report. This checks against all major UK finance providers to see if there is any outstanding finance on J258 KBY. If you buy a car with outstanding finance, the finance company can repossess it.

No warranty or guarantee of accuracy is provided for any free data on this page. The data guarantee applies only to information obtained through the purchase of a full check.