engine_compression_ratio · Other
Static compression ratio (dimensionless, e.g. 10.5 means 10.5:1). ICE, HEV, PHEV only — BEV variants have no compression ratio. Typical gasoline range 8–14; diesel 14–20; Atkinson / HCCI gasoline 13–1
type
numeric
applies to
all variants
filled
0%
sources
1
Meaning
Static compression ratio (dimensionless, e.g. 10.5 means 10.5:1). ICE, HEV, PHEV only — BEV variants have no compression ratio. Typical gasoline range 8–14; diesel 14–20; Atkinson / HCCI gasoline 13–1
Export shape
apex fieldjson
{
"engine_compression_ratio": 123,
"_provenance": {
"engine_compression_ratio": {
"source": "manual",
"source_record_url": "https://apex-db.org/docs/sources#manual",
"effective": true
}
}
}Provenance
Apex stores source-qualified provenance for exported values. Buyer snapshots and API responses include the upstream source record where redistribution rights allow it, so a downstream model can cite the original regulator or manufacturer feed.
Field-level fill rates are measured across the current variant snapshot. Sparse fields are still documented because they can be important for regulatory, EV, safety, or emissions workflows.