Arne Hertz was a Swedish

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 co-driver

Co-driver

Co-driver is the term given to the navigator of rally car in the sport of rally racing, who sits in the front passenger seat. The co-driver's job is to navigate, by reading off a set of pacenotes to the driver, often over a radio headset, due to the high level of noise in the car...

 in motor rallying

Rallying

Rallying, also known as rally racing, is a form of auto racing that takes place on public or private roads with modified production or specially built road-legal cars...

.

His name first became prominent when co-driving for Stig Blomqvist

Stig Blomqvist

"Stig" Lennart Blomqvist is a Swedish rally driver. He made his international breakthrough in 1971. Driving an Audi Quattro for the Audi factory team, Blomqvist won the World Rally Championship drivers' title in 1984 and finished runner-up in 1985...

 (Saab 96

Saab 96

For the modern car, see Saab 9-6The Saab 96 is an automobile made by Saab. It was introduced in 1960 and was produced until January 1980, a run of 20 years. Like the 93 it replaced, the 96 was a development from the old Saab 92 chassis and, on account of its improvements and modernisation, it...

 V4), with whom he first won the RAC Rally, in 1971. With Blomqvist, in the same year, he also won the Hankiralli

Hankiralli

The Hankiralli is a Finnish motor rally, in the European Championship. In 1981, Finnish driver Ulf Grönholm was killed in practice for this event. His son, Marcus Grönholm, later went on to become the 2000 World Champion rally driver. Swedish driver Stig Blomqvist won the event twice, in 1971 and...

, the Swedish Rally

Swedish Rally

The Uddeholm Swedish Rally , formerly the Swedish Rally, is an automobile rally competition held in Värmland, Sweden in early February. First held in 1950, when it was called the Rally to the Midnight Sun with start and finish at separate locations, seventeen years later both start and finish...

 and the 1000 Lakes Rally. This same partnership won the Swedish Rally, in 1972 and 1973, also in a Saab 96 V4.

His most successful period was from 1977 till 1990 when he partnered Finnish

Finland

Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

 driver Hannu Mikkola

Hannu Mikkola

Hannu Olavi Mikkola is a retired world champion rally driver. He was a seven time winner of the 1000 Lakes Rally in Finland and won the RAC Rally in Great Britain four times.- Career :...

, first in the Ford Escort

Ford Escort (European)

The Mark I Ford Escort was introduced in the United Kingdom at the end of 1967, making its show debut at Brussels Motor Show in January 1968. It replaced the successful long running Anglia. The car was presented in continental Europe as a product of Ford's European operation...

 RS1600, later moving on to the RS1800. He won the RAC Rally for a second time with Mikkola, in 1978 in the Escort. The pair left Ford in 1980 to join the Audi

Audi

Audi AG is a German automobile manufacturer, from supermini to crossover SUVs in various body styles and price ranges that are marketed under the Audi brand , positioned as the premium brand within the Volkswagen Group....

 team, using the 4 wheel drive Quattro

Audi Quattro

The Audi Quattro is a road and rally car, produced by the German automobile manufacturer Audi, now part of the Volkswagen Group. It was first shown at the 1980 Geneva Motor Show on 3 March.The word quattro is derived from the Italian word for "four"...

 and won the RAC Rally again in 1981 for the German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 team. He also navigated Mikkola to his world title in 1983, again in the venerable Quattro. The pair were always contenders on any event they entered during their thirteen years together.

In 1988 when Mikkola switched to the Mazda

Mazda

is a Japanese automotive manufacturer based in Fuchū, Aki District, Hiroshima Prefecture, Japan.In 2007, Mazda produced almost 1.3 million vehicles for global sales...

 team, Hertz stayed with Audi, teaming up with German driver Armin Schwarz

Armin Schwarz

Armin Schwarz is a German rally driver. He competed in the World Rally Championship from 1988 to 2005, winning the 1991 Rally Catalunya and taking six other podium finishes...

.