According to what I saw on their website through https://www.uber.com/en-NG/drive/resources/vehicle-requirements/,
they quoted "No salvaged or rebuilt vehicles" of which I know that majority of vehicles in Nigeria are salvaged or
accidented ones.

As seen on uber's website:

" What are you driving?

Vehicle options in Nigeria

uberX
The majority of riders choose uberX. You can use most recent models to drive with uberX in Abuja or Lagos.

Additional requirements

4-door sedan in good condition
Seat at least 4 passengers in addition to the driver
Working windows and air conditioning
No full-sized vans or trucks
No taxi cabs, government cars, or other marked vehicles
No salvaged or rebuilt vehicles
Car model year 2000 or newer qualify to drive with uberX.

View our list of popular models, but others may qualify.

SEE LIST OF POPULAR MODELS
Toyota - Corolla, Camry

Kia - Rio

Honda - Accord, Civic, Element

Hyundai - Elantra, Sonata, Tucson"

Do they have any reason(s) given for taking those salvaged or accidented vehicles to be working on their platform against
what they clearly stated on their website?

mrsage:
For a vehicle to be eligible for Uber in Nigeria, it must meet the following standards:

UberX & UberBlack vehicles must be sedan (no hatches accepted)

Vehicles must be 2008 or newer

Mileage should be a maximum of 100,000KMs when being put onto the Uber system

All vehicles require a working radio and air conditioner (electric windows preferable)

Vehicles must have a minimum of 1750mm width
No full-size (15 passenger) vans, Lincoln Towncars, Mercury Grand Marquis, or Ford Crown Victorias

No salvage vehicles. Must have a clean title.

To qualify for Uber, vehicle must have seat belts for all passengers including the driver.

Vehicles will remain on the Uber system unless complaints from riders about quality occur sooner

Only one driver per account, meaning the person driving the car is the one named on the account.

All drivers must go through a full background check initiated by UBER.

Driver must have a driver's license and lagos state driver's institute card.

Uber Nigeria reserves the right to refuse a vehicle that meets the above criteria, or accept a vehicle that does not meet the above criteria, as well as modify this criteria without notice.

Also got this! !!

rubbish thread by an unfortunate loser hydra with many monikers

LEGALWEALTH

LATEEFAT101

RONKUSESTHER

ENGINEERPROSPER

and many more which will be posted later

Any input?