Solved -PJ586- You were ready for that!

[Wendax]

2151:BOROUGH & BLOOD

This marketing highlight of a name belonged to the Borough & Blood Buggy Company of Marshall, Michigan, producing a high-wheeler in 1908.

Number 6666, please.

[João]

Barbier (2) : Carrosserie Barbier, Cannes, France?

Next number : 2250.

Not that...

Paul Barbier, Peugeot 203 Barquette?

[targhediferro]

 I hate quitting, but I don't have other Forrest Automobile; meanwhile I just want to have fun, so I will not follow any strategy...may I have 9017 please?

[Paul Jaray]

Let's join this crazy puzzle with a tribute to France : 1789 = ?

BENNET (2)

Nothing to do with France, I'm afraid, and nothing to do with the Gordon Bennett race.  Please let's try another number (and score a -10) : 1943 ?

Bennet Automotive from Hayward, California, builder of the Cobra replica of the 70s.

1943: BIMEL

[Paul Jaray]

10818 Please

MW

(27)

MW Motorsport (formerly known as Matthew White Racing) is a V8 Supercar team that is competing in the second-tier Australian V8 Supercar series, the Dunlop V8 Supercar Series.

8081 please

Not that...

[Paul Jaray]

I hate quitting, but I don't have other Forrest Automobile; meanwhile I just want to have fun, so I will not follow any strategy...may I have 9017 please?

I have to say that since now you have not been lucky...you pick some hard nuts and I'm glad you have fun the way you like it!
I have to quit too for a while now but felt like saying that before. 

[pguillem]

Let's join this crazy puzzle with a tribute to France : 1789 = ?

BENNET (2)

Nothing to do with France, I'm afraid, and nothing to do with the Gordon Bennett race.  Please let's try another number (and score a -10) : 1943 ?

Bennet Automotive from Hayward, California, builder of the Cobra replica of the 70s.

1943: BIMEL

The Bimel Automobile Co. in Sydney, Ohio ? I didn't know that it was related to the C.D. Beck Co. manufacturer of buses through Anderson Body Company.  If I'm right, I'll choose 2001 for another Space Odyssey

[D-type]

Can I try #6000 please

FOX (4)

Been away for a while as we had company over New Year.

Is this the Fox Motor Company, Philadelphia, Pennsylvania from 1921-23

[faksta]

PLUTO

Pluto, cca 1924-1927, Germany?

[Otto Puzzell]

Great!

1,244, please

Your following numbers can't be close to the previous and has to be chosen between 50 more or 50 less.
(example: you try 1234? next ones have to be higher than 1284 or lower than 1184).

Probably the word 'between' is misleading here...I mean 'has to be higher or lower than more of 50 unities'. Fixed.

Ugg - I hit 'modify' instead of 'quote', above.

1,290 please.

AVION

Your score:22

Back in 1984, Craig Henderson and Bill Green built a one-of-a-kind super fuel-efficient car called the Avion. In 1986, it set the Guinness world record for fuel economy by averaging 103.7USmpg (2.27L/100km) while driving from the Mexican to Canadian borders. Unlike most autos from that era, the Avion is still on the road... and breaking its own records. In October 2008, Henderson and Green achieved 113.1mpg (2.08 L/100km) on a 263-mile (423 km) trip in the US Pacific Northwest. Then, this August 29th, they departed from Blaine, Washington (adjacent to the Canadian border) and drove 1,478 miles (2,379 km) to the Mexican border. They used just 12.4 US gallons (46.94 L) of diesel and set a new record of 119.1mpg (1.97L/100km).

[Paul Jaray]

2151:BOROUGH & BLOOD

This marketing highlight of a name belonged to the Borough & Blood Buggy Company of Marshall, Michigan, producing a high-wheeler in 1908.

Number 6666, please.

+21

6666:GRAND RIDGE

[Paul Jaray]

Barbier (2) : Carrosserie Barbier, Cannes, France?

Next number : 2250.

Not that...

Paul Barbier, Peugeot 203 Barquette?

Yes! +21
I assume you still want 2250:BRADLEY (3)

[Paul Jaray]

I hate quitting, but I don't have other Forrest Automobile; meanwhile I just want to have fun, so I will not follow any strategy...may I have 9017 please?

Forest Automobile Company, Jersey City, New Jersey, was incorporated in 1901.
9017:LEDA (2)

[Paul Jaray]

Let's join this crazy puzzle with a tribute to France : 1789 = ?

BENNET (2)

Nothing to do with France, I'm afraid, and nothing to do with the Gordon Bennett race.  Please let's try another number (and score a -10) : 1943 ?

Bennet Automotive from Hayward, California, builder of the Cobra replica of the 70s.

1943: BIMEL

The Bimel Automobile Co. in Sydney, Ohio ? I didn't know that it was related to the C.D. Beck Co. manufacturer of buses through Anderson Body Company.  If I'm right, I'll choose 2001 for another Space Odyssey

Right! +23

2001:BLACKISTON

[Paul Jaray]

Can I try #6000 please

FOX (4)

Been away for a while as we had company over New Year.

Is this the Fox Motor Company, Philadelphia, Pennsylvania from 1921-23

Not that...

[Paul Jaray]

PLUTO

Pluto, cca 1924-1927, Germany?

Yes! +24

[Paul Jaray]

Great!

1,244, please

Your following numbers can't be close to the previous and has to be chosen between 50 more or 50 less.
(example: you try 1234? next ones have to be higher than 1284 or lower than 1184).

Probably the word 'between' is misleading here...I mean 'has to be higher or lower than more of 50 unities'. Fixed.

Ugg - I hit 'modify' instead of 'quote', above.

1,290 please.

AVION

Your score:22

Back in 1984, Craig Henderson and Bill Green built a one-of-a-kind super fuel-efficient car called the Avion. In 1986, it set the Guinness world record for fuel economy by averaging 103.7USmpg (2.27L/100km) while driving from the Mexican to Canadian borders. Unlike most autos from that era, the Avion is still on the road... and breaking its own records. In October 2008, Henderson and Green achieved 113.1mpg (2.08 L/100km) on a 263-mile (423 km) trip in the US Pacific Northwest. Then, this August 29th, they departed from Blaine, Washington (adjacent to the Canadian border) and drove 1,478 miles (2,379 km) to the Mexican border. They used just 12.4 US gallons (46.94 L) of diesel and set a new record of 119.1mpg (1.97L/100km).

Right! +21

[targhediferro]

Is it the LEDA from France, 1908, built by Thorand, Theim et Cie, Paris.?

[Wendax]

6666:GRAND RIDGE

Without much hope that it will help, the time range clue, please.

[Paul Jaray]

Is it the LEDA from France, 1908, built by Thorand, Theim et Cie, Paris.?

Not that...

[Paul Jaray]

6666:GRAND RIDGE

Without much hope that it will help, the time range clue, please.

Just 1 year, 1907.

[targhediferro]

Do you mean the Leda LT20 built for 1970 season of F5000?

[Paul Jaray]

Do you mean the Leda LT20 built for 1970 season of F5000?

That's it!
+21

[Paul Jaray]

6666:GRAND RIDGE

Without much hope that it will help, the time range clue, please.

Funny how this clue about 6666 led you to 666 credits!

[Wendax]

6666:GRAND RIDGE

Without much hope that it will help, the time range clue, please.

Just 1 year, 1907.

I was just too lazy to read about the marques filed under "Grand". 
The Grand Ridge Automobile Company of Grand Ridge, IL, planned to build a five-passenger rig in 1907. Never heard of again.

Number 14851, please.