UD Trucks Corporation, Japan

UD Trucks Corporation, Japan

UD Trucks Corporation Japan


December 1, 1935; 81 years ago

Ageo, Saitama, Japan


The UD Trucks Corporation, is a Japanese multinational company established in May 1950 and its headquarter  positioned in Ageo, Saitama, Japan. The company produced and sold light, medium and heavy duty diesel trucks, buses, bus chassis and special-purpose vehicles. It was known as Nissan Diesel till 2010, later  the company changed its name to UD Trucks.

The UD name was initially used for the company's Uniflow Diesel Engine (known as Two-stroke Engine), produced in 1955, but is now advertise as meaning "Ultimate Dependability.



1935 to 1980s :

Nihon Diesel Industries, Ltd, in Kawaguchi, Japan on the outskirts of Tokyo was established since 1935. The company begins its production of KD-series 2-cycle diesel engines. In 1940 production of 4.5-ton-payload TT6 series trucks started. The company changed its name to Minsei Diesel Industries, Ltd since 1950. The UD name appeared since 1955, when Minsei Diesel Industries released a range uniflow-clarification 2-cycle diesel engine. Japan's first RFA series air-suspension buses and 10-ton-payload 6TW10 series trucks called "Jumbo were developed in 1957.

The company name was changed again, this time to Nissan Diesel Motor Co. Ltd in 1960. There was initial production of compact 4-cycle 40 kW (55PS) SD20 and 44 kW (60PS) SD22 diesel engines in 1963. In 1972 V-type 206 kW (280 PS) RD8 and 257 kW (350 PS) RD10 diesel engines were sold. In 1973, light-duty trucks were produced for the Nissan Motor Company.


1980 to 1990s :

In 1982 addition of new forward-control cab for CWA52/45 series trucks, CKA-T series truck tractors and ultra-modern U(A)21, U(A)31, RA51 series buses was done. As of 1985 the company had a wide range of light-, medium- and heavy-duty trucks, buses and special-purpose vehicles such as crane carriers released. In 1989 there was an agreement with IVECO of Italy to jointly develop low-pollution diesel engines.

In 1992 Nissan Diesel Philippines Corp. started manufacturing deluxe coaches in cooperation with Jonckheere Bus & Coach NV/SA of Belgium.By 1995 Nissan Diesel produced its two million vehicles since commencing production in May 1950. 1996  the establishment of P.T. Astra Nissan Diesel Indonesia, a joint venture company with Marubeni Corporation and P.T. Astra International, and the Dongfeng Nissan Diesel Motor Co., Ltd, a joint venture company with Sumitomo Corporation and Dongfeng Motor Corporation began.


2000s :

In 2000 Nissan Diesel introduced new heavy-duty trucks in Japan and Asian countries. It also acquired the sales operation from Nissan Diesel Sales Co., Ltd. In 2003, Nissan Motor and Nissan Diesel agreement on a light-duty truck joint venture. There was also the signing of development assistance contract for air suspension of buses with China's Dongfeng Motor Corporation.

Nissan Diesel was purchased by the Volvo Group in 2007, becoming a subsidiary. After the transaction between Nissan Motor and Volvo, Nissan Diesel's business relations with Nissan Motors continued as normal and the Nissan Diesel & UD brand names remained unchanged. AB Volvo acquired the truck division of Renault in 2001.

Starting from 2007, the OEM supply agreement between Nissan Diesel and Mitsubishi Fuso Truck and Bus Corporation became effective, with both companies supplying engines to each other for use in new buses, and supplying some buses to each other with the partner's badge. In August 2009 Nissan Diesel and Mitsubishi Fuso announced a plan of further co-operation of bus manufacturing, including the establishment of a joint company for the bus business.

On 1 February 2010, Nissan Diesel changed its name to UD Trucks. In October 2010 both companies announced that they had discontinued the discussions concerning this issue, and that the OEM supply agreement would also be ended.



UD Trucks are marketed in 70 regions. Some of the main markets are Japan, Africa, Asia and Australia.


Logo & Brand

UD stands for  passion for Ultimate Dependability. To always run the extra mile in everything we do. To excel on the things that make a real difference for our customers. Our journey began in 1935, with the establishment of our company, a vision and a legendary test drive in 1939. A 3,000km run, through toughest mountain roads for 13 days, to prove the durability of our first truck before bringing it to the market. Our founder took the wheel himself, because of his vision—to make “the truck the world needs today”; durable, efficient trucks with Ultimate Dependability.


Popular Models

Products :

Trucks in Japan: Quon, Big thumb, Atlas, Quester and Condor.

Buses in Japan: UD Trucks finished its Japanese bus production since 2010 but in 2014 it launched a new series of UD Buses for the Indian market.



Former Bus Models

  1. Space Arrow: Heavy Duty Bus
  2. Space Wing
  3. Space Runner JP
  4. Space Runner RM
  5. Space Runner RA
  6. RN: Medium Duty Bus
  7. UA


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