Citroen GS: Which Version to Buy and Why
The Citroen GS catalogue contains one generation, one Estate 5-door body and five listed versions produced from August 1970 to December 1986. Because there is no later generation in the supplied data, the buying decision is not a comparison between generations: it is a choice among two 1.0 MT entries with different outputs, the 1.2 MT, and manual or automatic forms of the 1.3.
The Citroen GS catalogue contains one generation, one Estate 5-door body and five listed versions produced from August 1970 to December 1986. Because there is no later generation in the supplied data, the buying decision is not a comparison between generations: it is a choice among two 1.0 MT entries with different outputs, the 1.2 MT, and manual or automatic forms of the 1.3. All use Gasoline, four Opposite cylinders, no boost and FWD. The clearest differences are power, displacement and gearbox: outputs run from 54 hp to 65 hp, while transmission choices are a 5-speed Manual and a 4-speed Automatic.
Citroen GS generations: what changed?
The 1 generation ran from August 1970 through December 1986 as an Estate 5-door and contains five versions. The supplied catalogue lists no separate restyling and no additional generation, so it provides no numerical basis for claiming that a later generation changed the engine range, dimensions or equipment. Buyers comparing model years within this period should therefore identify the exact engine output and gearbox rather than infer a specification from the year alone.
Citroen GS engine and version specs
| Version | Power | Torque | Displacement | Fuel | Cylinders | Layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|---|
| 1.0 MT (54 hp) | 54 hp / 40 kW | not measured | 1015 cc | Gasoline | 4 | Opposite | No | 5-speed Manual | FWD |
| 1.0 MT (57 hp) | 57 hp / 42 kW | not measured | 1015 cc | Gasoline | 4 | Opposite | No | 5-speed Manual | FWD |
| 1.2 MT | 58 hp / 43 kW | not measured | 1200 cc | Gasoline | 4 | Opposite | No | 5-speed Manual | FWD |
| 1.3 MT | 65 hp / 48 kW | not measured | 1299 cc | Gasoline | 4 | Opposite | No | 5-speed Manual | FWD |
| 1.3 AT | 65 hp / 48 kW | not measured | 1299 cc | Gasoline | 4 | Opposite | No | 4-speed Automatic | FWD |
The two versions named exactly 1.0 MT must be separated by output. Both have 1015 cc, but one produces 54 hp and the other 57 hp. The 57 hp version adds 3 hp without adding displacement and yields approximately 56.2 hp per litre, compared with approximately 53.2 hp per litre for the 54 hp version.
The 1.2 MT produces 58 hp from 1200 cc, or approximately 48.3 hp per litre. It has 1 hp more than the 57 hp 1.0 MT, despite having 185 cc more displacement. On the figures available, that makes the higher-output 1.0 MT the stronger choice when output relative to displacement matters.
The 1.3 MT and 1.3 AT each produce 65 hp from 1299 cc, equivalent to approximately 50.0 hp per litre. Their engine specifications do not separate them; the meaningful distinction is the transmission. The 1.3 MT uses a 5-speed Manual, whereas the 1.3 AT uses a 4-speed Automatic.
Citroen GS performance, mpg and economy
Acceleration from 0 to 100 km/h is not measured for the 1.0 MT (54 hp), 1.0 MT (57 hp), 1.2 MT, 1.3 MT or 1.3 AT. Top speed is also not measured for every version.
City fuel consumption, highway fuel consumption and combined fuel consumption are not measured for all five versions. CO₂ output and ecological class are not measured as well. Consequently, the data cannot support an mpg ranking or a claim that one GS engine costs less to run.
Torque and the engine speeds at which power and torque are produced are not measured for any version. The additional horsepower of the 1.3 models is clear, but the data cannot establish how strongly any version accelerates or how its response differs at particular engine speeds.
Citroen GS dimensions, weight and ground clearance
Kerb weight and gross weight are not measured for the 1.0 MT (54 hp), 1.0 MT (57 hp), 1.2 MT, 1.3 MT or 1.3 AT. A weight-per-horsepower comparison is therefore not possible. Citroen GS length, width and height are likewise not measured in the supplied specifications.
Ground clearance is 154 mm for every listed version. Fuel-tank capacity and wheel sizes are not measured across the range. Buyers do not gain additional documented clearance by moving from the 1.0 or 1.2 to either 1.3 version.
Every version has Independent hydropneumatic front and rear suspension. Every version also lists Ceramic ventilated front brakes and Disc rear brakes. These entries do not distinguish one version from another.
Citroen GS reliability and buying limits
Reliability, repair frequency, maintenance cost and known problems are not measured in the supplied data. There is therefore no factual basis here for ranking the 1.0 MT, 1.2 MT, 1.3 MT or 1.3 AT by dependability. Condition, service history and price would matter to a purchase, but none is included in this catalogue dataset.
The catalogue also supplies no prices or sale listings, so it cannot calculate what any extra purchase cost buys. It can only show what a step up in specification provides: more horsepower, more displacement, or a different gearbox.
Which Citroen GS version should you buy?
Choose the 1.0 MT (57 hp) over the 1.0 MT (54 hp) when both otherwise suit your needs. It delivers 3 hp and 2 kW more from the same 1015 cc displacement, with the same 5-speed Manual gearbox, FWD, 154 mm clearance and listed chassis specifications.
The 1.2 MT is difficult to justify purely by the available output figures. Compared with the 1.0 MT (57 hp), it adds 185 cc but only 1 hp and 1 kW. Its advantage over the 1.0 MT (54 hp) is 4 hp and 3 kW, accompanied by the same Manual gearbox, FWD and ground clearance.
Choose the 1.3 MT for the strongest manual specification in the catalogue. Its 65 hp output is 11 hp above the 54 hp 1.0 MT, 8 hp above the 57 hp 1.0 MT, and 7 hp above the 1.2 MT. It retains the 5-speed Manual gearbox.
Choose the 1.3 AT when an Automatic gearbox is the priority. It matches the 1.3 MT at 65 hp, 48 kW and 1299 cc but substitutes a 4-speed Automatic for the 5-speed Manual. The available data records no power penalty for choosing the automatic version.
On specifications alone, the 1.3 MT is the clearest all-round choice because it combines the range’s highest recorded output with the 5-speed Manual. The 1.3 AT is the corresponding automatic choice, while the 1.0 MT (57 hp) offers the best calculated power per litre. A final decision based on performance, economy, weight, reliability or value is not possible because those measurements and prices are not provided.