Alternator Bosch or VALEO

PartReview Score

Rank #2 in ranking

294

133

204

3.7

Lights

4.0

Noise

1.6

Warning light

3.1

Owners' choice:

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #4 in ranking

3.7

Lights

3.8

Noise

1.0

Warning light

3.5

Owners' choice:

Ford Escape

Reviews

All

Bosch

VALEO

VALEO › Alternator

Pad43 25 Jan 2026, 00:13

Warning light:

Rating 4.0

Had the same in reverse. Bosch factory, Valeo worked fine though.

Pros: worked fine

Vehicle: Volkswagen Golf

Bosch › Alternator

Compy486 24 Jan 2026, 23:17

Warning light:
Lights:

Rating 4.0

I just had to swap my alternator today on my MK7. Mine was Valeo but I could only find a Bosch locally, I decided to give it a shot and it worked just fine. Just a PSA for anyone in the same situation, they are both the same barring a slightly different orientation of the plug on the back.

Pros: worked just fine, compatible

Vehicle: Volkswagen Golf

Bosch › Alternator

iforgotmylogin32 29 Dec 2025, 02:30

Rating 4.0

I am currently leaning towards picking up a new Bosch 120 amp over the BMW.

Vehicle: BMW

VALEO › Alternator

peacefulhectarez 27 Dec 2025, 03:35

Rating 5.0

Remember the old Bosch and Valeo alternators where the brushes were built into the regulator, which cost $15 and came off the back with two screws? Pepperidge Farm remembers.

Bosch › Alternator

Eric D 25 Dec 2025, 04:28

Rating 5.0

In place of the Valeo alternator I installed a Bosch VR6 120 amp alternator with a Bosch ABA alternator pulley (its 5 ribs versus 6 ribs of the VR6).

Pros: increased amperage

Bosch › Alternator

Gold-Consequence1750 16 Dec 2025, 19:22

Rating 4.0

I just went over 195,000 miles while I've driven it over 26,000 miles this year with the only failures being the original 15 year old Bosch alternator and the spark plugs needing to be replaced.

Pros: motor itself is reliable

Cons: alternator needed replacement

Vehicle: Volkswagen Jetta

Mileage: 313821 km

Bosch › Alternator

Brent42088 2 Dec 2025, 17:32

Rating 3.0

I've been looking on RockAuto. Will a Bosch remanufactured or AC Delco remanufactured work ok?

VALEO › Alternator

Character_Wishbone18 18 Nov 2025, 06:03

Rating 3.0

I had Valeo in my other car, very common for Bosche to overcharge.

Pros: very common

Cons: Bosche overcharge

Bosch › Alternator

Former-Primary-3186 21 Dec 2025, 04:49

Warning light:

Rating 1.0

Literally just put a FCP Bosch remanufactured 2 pin alternator in our 530 last week--it doesn't work at all. Communicating with FCP currently to send it back and get a replacement, but I'm not happy about it. I was told that Bosch was the one to go with for best quality, but now I'm skeptical.

Cons: doesn't work at all

Vehicle: BMW

Bosch › Alternator

Ok-Window-5847 9 Dec 2025, 12:42

Noise:

Rating 1.0

the bosch alternators are junk. I had to warranty mine through fcp 3 times for the exact same bs: loud ass whining noise and over volting immediately after instal. Cheap chinese junk.

Cons: loud whining noise, over volting

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Show all

Which alternator to choose — Bosch or VALEO?

If choosing alternator across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.

We compare alternator across these categories:

Comparison of alternator Bosch and VALEO

PR Score.
Overall ranking.
Vote balance.
Average rating.
Number of reviews.
Feature ratings.
Car owners’ choice.

Which alternator are better — VALEO or Bosch?

In March 2026 on PartReview, alternator Bosch were overall better than VALEO.

Bosch received a PR Score of 72 out of 100, and VALEO scored 70 points.
Bosch ranked 2 in the overall ranking, and VALEO ranked 4.
The average rating is higher for VALEO (3.7) than for VALEO (3.7).

Which alternator are more popular — Bosch or VALEO?

In March 2026 on PartReview, alternator Bosch were overall more popular than VALEO.

By vote balance, alternator Bosch surpassed VALEO:

For Bosch, the ratio of positive (471) to negative (177) votes is 294 votes.
For VALEO, the ratio of positive (87) to negative (36) votes is 51 vote.

By number of reviews, alternator Bosch surpassed VALEO:

For alternator Bosch there are 204 reviews: 133 positive, 36 neutral, 35 negative.
For alternator VALEO there are 39 reviews: 25 positive, 6 neutral, 8 negative.

Which alternator do car owners prefer — Bosch or VALEO?

In March 2026, according to PartReview, alternator Bosch led more car-specific ratings than VALEO:

Bosch are chosen by owners of cars such as: BMW X5, Ford Focus, Volkswagen Golf, Volkswagen Jetta, Volkswagen Passat, and others.

VALEO are chosen by owners of cars such as: Ford Escape, and others.

Other comparisons of alternator

If this comparison didn’t fully answer your question, there are many others on PartReview.

For example, comparisons of alternator Bosch with: Denso, Duralast, OEM Toyota, OEM Honda, OEM Volkswagen, AC DELCO, OEM FORD, OEM Audi, OEM Nissan, Motorcraft.

Also available: comparisons of alternator VALEO with: Denso, Duralast, OEM Toyota, OEM Honda, OEM Volkswagen, AC DELCO, OEM FORD, OEM Audi, OEM Nissan, Motorcraft.

You can also see who is better among other alternator manufacturers: Bosch or Denso, Denso or Duralast, OEM Toyota or Denso, Bosch or Duralast, Denso or VALEO.