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“C250” covers different markets, years and engines, so the VIN, owner’s manual and Mercedes operating-fluid sheet decide the correct coolant—not its color and not a universal “European” label. For example, W204 C250 CGI applications with the M271.860 are shown with MB 325.0 in published fitment data; newer Mercedes applications can specify 325.6/326.6. 325.x denotes concentrate and 326.x denotes ready-mix in the corresponding family. Never mix formulas merely because their colors look alike.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Genuine Mercedes-Benz Zerex G-48 Q 6 88 0187 | $20–$30 | Amazon · eBay |
| 2 | ZEREX G-48 Concentrate | $22.84 | Amazon |
| 3 | ZEREX G-48 50/50 Prediluted Coolant | $17.71 | Amazon |
| 4 | Pentosin Pentofrost NF | $20–$35 | Amazon |
| 5 | Genuine Mercedes-Benz Blue Coolant Premix | $20–$35 | Amazon |
| 6 | Genuine Mercedes-Benz Pink G-40 Concentrate 0009896807090109 | $25–$40 | Amazon |
| 7 | ZEREX G-40 Concentrate | $20–$35 | Amazon |
| 8 | ZEREX G-40 50/50 Premix | $18–$30 | Amazon |
| 9 | Mercedes-Benz Anticorrosion Antifreeze Q 1 03 0002 | $20–$35 | Amazon |
The picks, in detail
Genuine Mercedes-Benz Zerex G-48 Q 6 88 0187
A Mercedes-branded G-48 concentrate carrying MB approval 325.0. It is for C250 applications whose manual or BeVo lookup calls for 325.0.
- MB 325.0 approval
- concentrate
- Q 6 88 0187
- Exact approval stated
- Genuine Mercedes part number
- Not for every C250
- Mix only to manual specification
ZEREX G-48 Concentrate
A G-48 concentrate with MB 325.0 approval. This is an approval-based selection, not a color-match selection.
- MB 325.0 approval
- concentrate
- G-48 formula
- Published Mercedes approval
- Current US retail supply
- Requires correct water ratio
- Not universal Euro coolant
ZEREX G-48 50/50 Prediluted Coolant
The ready-mix G-48 counterpart for systems calling for the 326.0 ready-mix specification; check the bottle’s exact approval and the vehicle documentation.
- 50/50 premix
- MB 326.0 counterpart
- G-48 family
- No dilution step
- Published $17.71 listing
- Do not add water as if it were concentrate
- Verify approval on bottle
Pentosin Pentofrost NF
A Pentosin coolant line sold for Mercedes applications where MB 325.0 is required; select concentrate versus premix from the exact product label.
- MB 325.0 standard
- Pentosin NF line
- concentrate and premix variants
- Named Mercedes standard
- Established aftermarket brand
- Variant format differs
- Verify the specific bottle
Genuine Mercedes-Benz Blue Coolant Premix
A genuine blue 50/50 product listed as MB 326.0 premix. The approval, not the blue appearance, is the reason it belongs in this guide.
- MB 326.0
- 50/50 premix
- genuine Mercedes
- Ready-mix format
- Exact Mercedes specification
- Only for documented 326.0 applications
- Do not dilute further
Genuine Mercedes-Benz Pink G-40 Concentrate 0009896807090109
A genuine Mercedes pink G-40 concentrate listed with MB approvals 325.5/325.6. It belongs only where the VIN/manual calls for that later approval family.
- MB 325.5 / 325.6
- concentrate
- 0009896807090109
- Part number and approval published
- Later-spec formula
- Not interchangeable by color
- Requires proper mixing
ZEREX G-40 Concentrate
A pink G-40 concentrate sold for MB 325.6 applications. Match the printed approval to a VIN/manual lookup before use.
- MB 325.6
- concentrate
- G-40 formula
- Approval-based alternative
- Concentrate format
- Later-spec only when documented
- Use correct water mix
ZEREX G-40 50/50 Premix
A ready-mixed G-40 product associated with the MB 326.6 premix family; use only where the vehicle documentation specifies that family.
- 50/50 premix
- MB 326.6 family
- G-40
- No dilution calculation
- Current retail product
- Not for 325.0 systems by color
- Check exact label
Mercedes-Benz Anticorrosion Antifreeze Q 1 03 0002
A Mercedes concentrate historically identified as meeting MB 325.0; use the currently available approved replacement where the original part is superseded.
- MB 325.0
- concentrate
- Q 1 03 0002 reference
- Official Mercedes specification reference
- Useful cross-reference
- Older part reference
- Buy current approved stock
Buying tips
- Read the approval number on the actual bottle and match it to the VIN/manual or Mercedes BeVo lookup; never choose by color alone.
- Use concentrate only with the water ratio and freeze protection specified by Mercedes; do not dilute an already premixed 326.x product.
- When the installed coolant identity is uncertain, consult a Mercedes technician before topping up or flushing; do not assume all European coolants mix.
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